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Simplifying 15(0) + 20 = 20(0) + -10 Multiply 15 * 0 0 + 20 = 20(0) + -10 Anything times zero is zero. 0 + 20 = 20(0) + -10 Combine like terms: 0 + 20 = 20 20 = 20(0) + -10 Multiply 20 * 0 20 = 0 + -10 Anything times zero is zero. 20 = 0 + -10 Combine like terms: 0 + -10 = -10 20 = -10 Solving 20 = -10 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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