Question

Please help! Solution set for:
4x-y=8
x+2y=11

Answer 1

3,4

Answer 2

Thanks guys!

Answer 3

Multiply first equation by 2:

8x - 2y = 16
x + 2y = 11

Add them:

9x = 27

Find x and then y...

Answer 4

4x-y=8 => y = 4x -8 -(1)
x+2y=11 -(2)
Sub. (1) into (2)
x + 2 (4x-8) = 11
9x - 16 = 11
x = 3

Sub. x=3 into (1)
y = 4(3) - 8 = 4

So, (x,y) = (3,4)

@KRAZZy Please also show your workings instead of just giving the final answer to the question.

Answer 5

Thanks Callisto

Answer 6

ok @Callisto i will next time