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Description Use the Substitution Method to find the solution to the given system. 7x - 8y = -12 -4x + 2y = 3 Use the

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Description Use the Substitution Method to find the solution to the given system. 7x - 8y = -12 -4x + 2y = 3 Use the Elimination Method to find the solution to the given system. 2x + 3y = 20 7x + 2y = 53\fSimplify the expression. Assume that x, y, and z are all positive. (i) 4 31:73:20 2:11 (j) 14/ 4533341? 832313.35 Multiply the expression. Assume that (I: is positive. (k) (4 WE)

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