How can I solve this?

((5p-4)/6) - ((2p+3)/2) = 7

In my text book it says the answer is p = -55 but I've tried and can't get this.

Thanks.

Printable View

- Apr 13th 2008, 05:31 AMMymbleSolving linear equations.
How can I solve this?

((5p-4)/6) - ((2p+3)/2) = 7

In my text book it says the answer is p = -55 but I've tried and can't get this.

Thanks.

- Apr 13th 2008, 05:35 AMMoo
Hello,

Put the fractions in the left hand side of the equality on the same denominator (6).

Then, do the same for 7. 7=42/6 and multiply both sides by 6.

After that, you may solve it like a normal equation... Can you show a bit of your work ? To see if you're going the right way :) - Apr 13th 2008, 05:41 AMMymble
- Apr 13th 2008, 05:46 AMmr fantastic
- Apr 13th 2008, 05:53 AMMymble
- Apr 13th 2008, 05:53 AMMoo
That's it ^^

The - sign is distributed into the parenthesis ;)

When you substract : -(a+b) this means you substract a AND b, so it's like -a-b - Apr 13th 2008, 06:00 AMmr fantastic
- Apr 13th 2008, 06:02 AMMymble
Thankyou very much for your help both of you.

Sorry if it seemed a silly mistake. - Apr 13th 2008, 06:04 AMmr fantastic