Question 188026
x= 2y + 5
9x + y= -126


You are given x to be 2y + 5.

Plug that into the other equation to find y.

9(2y + 5) + y = -126

18y + 45 + y = -126

19y = -126 - 45

19y = 171

y = 171/19

y = 9

To find x, plug 9 for y in EITHER of the two equations given.

I will let you finish.