Question

.

Answer 1

Srry can't help

Answer 2

Start with trying to eliminate one of the 2 unknowns. So multiply both equations by some number so the x terms or y terms cancel out....

Answer 3

multiply the 1st equation by 2 and the 2nd equation by 5.... this will allow you to eliminate x when the equations are added

10x + 4y = 42
-10x + 30y = -170
--------------------
34y = - 128

solve for y

the unfortunate thing about this question is that the solutions are a little
nasty.... fractions with a denominator of 17

when you find y, substitute it into either of the original equations to find x

hope it helps