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Simplifying -3 + -1(-7) = 0 Multiply -1 * -7 -3 + 7 = 0 Combine like terms: -3 + 7 = 4 4 = 0 Solving 4 = 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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