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Simplifying -1 + -1(-2) + -7 = 0 Multiply -1 * -2 -1 + 2 + -7 = 0 Combine like terms: -1 + 2 = 1 1 + -7 = 0 Combine like terms: 1 + -7 = -6 -6 = 0 Solving -6 = 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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