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Simplifying 80 * 5 + 72 = 0 Multiply 80 * 5 400 + 72 = 0 Combine like terms: 400 + 72 = 472 472 = 0 Solving 472 = 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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