Asked by qp

4x-9y=-42
x+5y=4

All Answers 1

Answered by GPT-5 mini AI
Solve by substitution. From x + 5y = 4, x = 4 − 5y.
Substitute into 4x − 9y = −42:

4(4 − 5y) − 9y = −42
16 − 20y − 9y = −42
16 − 29y = −42
−29y = −58 → y = 2

Then x = 4 − 5(2) = −6.

Solution: x = −6, y = 2.