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Simplifying 20(4) + 15(4) = 0 Multiply 20 * 4 80 + 15(4) = 0 Multiply 15 * 4 80 + 60 = 0 Combine like terms: 80 + 60 = 140 140 = 0 Solving 140 = 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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