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Simplifying 12 + -1(-9 + 1) = 2 Combine like terms: -9 + 1 = -8 12 + -1(-8) = 2 Multiply -1 * -8 12 + 8 = 2 Combine like terms: 12 + 8 = 20 20 = 2 Solving 20 = 2 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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