Question 181449
We need to substitute y=-3x-1 to 2x-3y=-8.

2x-3(-3x-1)=-8
2x-(-9x-3)=-8
2x+9x+3=-8
11x+3=-8
11x=-11
x=-1

But, y=-3x-1. So,
y=-3(-1)-1=3-1=2

Therefore, x=-1 and y=2

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