Algebra

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Algebra
Hi all.
I’m looking for some basic algebra help with my kids homework. Maths is not my strong point.
How do you simplify 5x
—  x
2
5x over 2 take away x
Thanks Clarets
I’m looking for some basic algebra help with my kids homework. Maths is not my strong point.
How do you simplify 5x
—  x
2
5x over 2 take away x
Thanks Clarets

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Re: Algebra
Can’t get it to look right on the message board but you get the idea...

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Re: Algebra
5x/2 = 2.5x
2.5x  x = 1.5x
2.5x  x = 1.5x

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Re: Algebra
The answer to the first one is 6x

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Re: Algebra
Can you have half numbers as the multiplier ?

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Re: Algebra
Can you explain ?Down_Rover wrote:The answer to the first one is 6x

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Re: Algebra
Well, thats another day thats passed and I "Still" haven't used Algebra.

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Re: Algebra
How on earth did you get that answer?Down_Rover wrote:The answer to the first one is 6x
5x/2x = 1.5x

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Re: Algebra
Is that 5x/2 x?
as per previous post that's the same as 2.5x 1x the same as 1.5x or 3x/2
There may be a desired methodology though say putting the whole thing over 2; so you have 5x/2 2x/2 = (5x2x)/2 = 3x/2.
as per previous post that's the same as 2.5x 1x the same as 1.5x or 3x/2
There may be a desired methodology though say putting the whole thing over 2; so you have 5x/2 2x/2 = (5x2x)/2 = 3x/2.

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Re: Algebra
Awesome. Thanks. I think I understand now.
Re: Algebra
You should force yourself.pushpinpussy wrote:Well, thats another day thats passed and I "Still" haven't used Algebra.

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Re: Algebra
Algebra is really useful when hanging pictures across a wall & you want equal spacing; plenty of other DIY applications too.
Re: Algebra
Rack of eye every time.LeadBelly wrote:Algebra is really useful when hanging pictures across a wall & you want equal spacing; plenty of other DIY applications too.
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Re: Algebra
Fenwick wrote:Rack of eye every time.
And a twist o t'gob.
Obviously
Re: Algebra
I was useless at Maths at school, all I learnt was 9 x 9 = 99.
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Re: Algebra
On my screen it says 5x   xLongsidebovril wrote:Can you explain ?
So the answer is 6x
Must be a formatting thing if you see it differently

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Re: Algebra
Substituting numbers for x it appears the whole is 1.5x
5x2/22= 10/22= 52=3. 3 is 2x1.5
5x3/23= 15/22= 7.53=4.5. 4.5 is 3x1.5
5x4/24= 20/24= 104=6. 6 is 4x1.5
5x2/22= 10/22= 52=3. 3 is 2x1.5
5x3/23= 15/22= 7.53=4.5. 4.5 is 3x1.5
5x4/24= 20/24= 104=6. 6 is 4x1.5
Re: Algebra
https://www.youtube.com/watch?v=JqZo07OtuA" onclick="window.open(this.href);return false;

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Re: Algebra
One more.
X squared minus x squared over 2.
X squared minus x squared over 2.

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Re: Algebra
that's basically x sq minus half x squared = half x squared (xsq/2) (something less half of itself always leaves half of itself same for x squared)

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Re: Algebra
5x/2x = 3x/2
Right?
Edit to add: my reasoning is that after you've halved something, anything you subtract is equal to 2 times whatever you're subtracting before you halved it. So i think that's the simplification.
Right?
Edit to add: my reasoning is that after you've halved something, anything you subtract is equal to 2 times whatever you're subtracting before you halved it. So i think that's the simplification.
Last edited by Imploding Turtle on Mon Feb 25, 2019 9:52 pm, edited 1 time in total.

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Re: Algebra
You might find this useful:
https://www.symbolab.com/solver/equatio ... D%7B2%7Dx" onclick="window.open(this.href);return false;
https://www.symbolab.com/solver/equatio ... D%7B2%7Dx" onclick="window.open(this.href);return false;

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Re: Algebra
It's taken me a long time and I was useless at maths. But can now double my money as soon as I draw it from a bank machine...
Re: Algebra
Waste of time

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Re: Algebra
Thanks for the help. It’s slowly coming back to me
Re: Algebra
Remember Pythagoras.
I used this as a groundsman to make ninety degree corners, such as you'd get on a football pitch, but for setting out most sports including running tracks. We called it '3, 4, 5'. Any triangle with the ratios 3, 4, 5 (say 30 metres x 40 m x 50m) had a right angled triangle opposite the 5 side. We would put a length of string along one side and then place a pin (I used screw drivers) where the corner would be, then measure 40m from the corner pin along the string and put a second pin in there. Then I attached two tape measures, one to the corner pin, the other to the other pin. From the corner pin I'd run out 30m, and from the other pin 50m. Where they met I would put in a third pin. Then run a string from the corner pin through the third pin and you have a right angle. All because of Pythagoras's Theorem.
(For a right angled triangle, the square on the hypotenuse (which means the longest side) is equal to the sum (sum means 'add up') of the squares on the other two sides. 3x3=9, 4x4=16; 9+16=25; 5x5=25)
I used this as a groundsman to make ninety degree corners, such as you'd get on a football pitch, but for setting out most sports including running tracks. We called it '3, 4, 5'. Any triangle with the ratios 3, 4, 5 (say 30 metres x 40 m x 50m) had a right angled triangle opposite the 5 side. We would put a length of string along one side and then place a pin (I used screw drivers) where the corner would be, then measure 40m from the corner pin along the string and put a second pin in there. Then I attached two tape measures, one to the corner pin, the other to the other pin. From the corner pin I'd run out 30m, and from the other pin 50m. Where they met I would put in a third pin. Then run a string from the corner pin through the third pin and you have a right angle. All because of Pythagoras's Theorem.
(For a right angled triangle, the square on the hypotenuse (which means the longest side) is equal to the sum (sum means 'add up') of the squares on the other two sides. 3x3=9, 4x4=16; 9+16=25; 5x5=25)

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Re: Algebra
Can probably model your rate of recall by:Longsidebovril wrote:Thanks for the help. It’s slowly coming back to me
R =(t + 2)^n
Where R is your memory recall, t is time, 2 a factor based on number of times you pose an algebra question on clarets forum and n is exponent governed by how quickly you learn.