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Simplifying 5(7 + -4) = 7(2(7) + 1) Combine like terms: 7 + -4 = 3 5(3) = 7(2(7) + 1) Multiply 5 * 3 15 = 7(2(7) + 1) Multiply 2 * 7 15 = 7(14 + 1) Combine like terms: 14 + 1 = 15 15 = 7(15) Multiply 7 * 15 15 = 105 Solving 15 = 105 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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