Solving Systems by Elimination
1 answer:
Answer:
x=-2, y=-3. (-2, -3).
Step-by-step explanation:
-5x+4y=-2
2x-7y=17
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2(-5x+4y)=2(-2)
5(2x-7y)=5(17)
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-10x+8y=-4
10x-35y=85
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-27y=81
y=81/-27
y=-3
2x-7(-3)=17
2x+21=17
2x=17-21
2x=-4
x=-4/2
x=-2
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