# Thread: Looking to be able to solve this type of problem...

1. ## Looking to be able to solve this type of problem...

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2. Originally Posted by jcarter1974
I'm looking to be able to solve the types of problem below. Can anyone solve this? And HOW do you solve it? Please show me how. Any help would be greatly appreciated.
Thanks

If 6x - 3y = 30 and 4x = 2 - y then find x + y.
Rewrite as,
$6x - 3y = 30$
$4x + y = 2$

Divide the first equation to -3 to get:
$-2x + y = - 10$
$4x+y = 2$

$2x + 2y = -8$

Divide by 2,
$x+y=-4$

3. Thanks ThePerfectHacker. Ya know of any good reading/tutorials that teach the rules you followed?