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Simplifying 4x + -4x + 20 = 5 Reorder the terms: 20 + 4x + -4x = 5 Combine like terms: 4x + -4x = 0 20 + 0 = 5 20 = 5 Solving 20 = 5 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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