Question

5y + 7x = -1
-2y = -5x - 23
Elimination

Answer 1

Explanation:

+25y + 35x = -1. × 5

+35x - 14y = -161. × 7

-. +. +

39y = 156

y=4

putting value of y in 5y + 7x =-1

5×4+7x =-1

7x = -21

x= -3