Question

— 5у + 8x = –18
5y + 2x = 58

Answer 1

x=4

Explanation:

-5y+8x=-18 linear combination: cancel out -5y with 5y. combine 8x and 2x

5y+2x=58 10x. combine -18 and 58 to get 40

10x=40 40/10=4

x=4