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Simplifying 13 + -7(0) = 0 Multiply -7 * 0 13 + 0 = 0 Anything times zero is zero. 13 + 0 = 0 Combine like terms: 13 + 0 = 13 13 = 0 Solving 13 = 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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