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Simplifying 5(x + 1) + 5(2 + -1x) = 126 Reorder the terms: 5(1 + x) + 5(2 + -1x) = 126 (1 * 5 + x * 5) + 5(2 + -1x) = 126 (5 + 5x) + 5(2 + -1x) = 126 5 + 5x + (2 * 5 + -1x * 5) = 126 5 + 5x + (10 + -5x) = 126 Reorder the terms: 5 + 10 + 5x + -5x = 126 Combine like terms: 5 + 10 = 15 15 + 5x + -5x = 126 Combine like terms: 5x + -5x = 0 15 + 0 = 126 15 = 126 Solving 15 = 126 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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