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7. Solve each of the following systems. J x1 - x2 = 6 1. Xi + x2 = 5 S x1 + 2x2 =

7. Solve each of the following systems. J x1 - x2 = 6 1. Xi + x2 = 5 S x1 + 2x2 = 1 2x1 + x2 = 2 xi + 2x2 = 1 3. X1 + 2x2 = 2 2.

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