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Simplifying 7(-5) + 15 = 0 Multiply 7 * -5 -35 + 15 = 0 Combine like terms: -35 + 15 = -20 -20 = 0 Solving -20 = 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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