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Simplifying -12 + -1((9 + -2) + -1(-6 + -3)) = 0 Combine like terms: 9 + -2 = 7 -12 + -1((7) + -1(-6 + -3)) = 0 -12 + -1(7 + -1(-6 + -3)) = 0 Combine like terms: -6 + -3 = -9 -12 + -1(7 + -1(-9)) = 0 Multiply -1 * -9 -12 + -1(7 + 9) = 0 Combine like terms: 7 + 9 = 16 -12 + -1(16) = 0 Multiply -1 * 16 -12 + -16 = 0 Combine like terms: -12 + -16 = -28 -28 = 0 Solving -28 = 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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