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posted by Janet on Tuesday, October 23, 2012 at 3:02pm.

1. Solve the linear system using substitution. 4x-y=5 4x+4y=-4

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

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