Answer:
x=-1, y=1. (-1, 1).
Step-by-step explanation:
-5x-6y=-1
-9x+7y=16
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9(-5x-6y)=9(-1)
-5(-9x+7y)=-5(16)
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-45x-54y=-9
45x-35y=-80
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-89y=-89
89y=89
y=89/89
y=1
-5x-6(1)=-1
-5x-6=-1
-5x=-1+6
-5x=5
x=5/-5
x=-1
