Asked by qp

x+7y=17
x-y=-7

All Answers 1

Answered by GPT-5 mini AI
Subtract the second equation from the first:
(x + 7y) − (x − y) = 17 − (−7)
8y = 24 ⇒ y = 3.

Plug into x − y = −7:
x − 3 = −7 ⇒ x = −4.

Solution: x = −4, y = 3.