Answer:
x = -1
y = 1
Step-by-step explanation:
2y + 7x = -5 ----------------(i)
5y - 7x = 12 ---------------(ii)
Add equation (i) & (ii)
(i) 2y + 7x = -5
(ii) 5y - 7x = 12 { x will be eliminated}
7y = 7
y = 7/7
y =1
Plugin the value of y in equation (i)
2*1 + 7x = -5
2 +7x = -5
7x = -5-2
7x = -7
x = -7/7
x = -1
