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Simplifying -6(-13) + 9(-13) = 0 Multiply -6 * -13 78 + 9(-13) = 0 Multiply 9 * -13 78 + -117 = 0 Combine like terms: 78 + -117 = -39 -39 = 0 Solving -39 = 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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