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Question

1. Solve the linear system using substitution.

4x-y=5
4x+4y=-4
12 years ago

Answers

Steve
substitute y=4x-5 into 4x+4y=-4 to get

4x+4(4x-5) = -4
4x+16x-20 = -4
20x = 16
x = 4/5
so, y = -9/5
12 years ago

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