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Simplifying 20 + -5 + 5 = 0 Combine like terms: 20 + -5 = 15 15 + 5 = 0 Combine like terms: 15 + 5 = 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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