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Simplifying (x + 12) + -1(x + -15) = 0 Reorder the terms: (12 + x) + -1(x + -15) = 0 Remove parenthesis around (12 + x) 12 + x + -1(x + -15) = 0 Reorder the terms: 12 + x + -1(-15 + x) = 0 12 + x + (-15 * -1 + x * -1) = 0 12 + x + (15 + -1x) = 0 Reorder the terms: 12 + 15 + x + -1x = 0 Combine like terms: 12 + 15 = 27 27 + x + -1x = 0 Combine like terms: x + -1x = 0 27 + 0 = 0 27 = 0 Solving 27 = 0 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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