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Simplifying (7) + -1(-2) = 0 7 + -1(-2) = 0 Multiply -1 * -2 7 + 2 = 0 Combine like terms: 7 + 2 = 9 9 = 0 Solving 9 = 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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