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Simplifying 20x + 7 = 20x + -7 Reorder the terms: 7 + 20x = 20x + -7 Reorder the terms: 7 + 20x = -7 + 20x Add '-20x' to each side of the equation. 7 + 20x + -20x = -7 + 20x + -20x Combine like terms: 20x + -20x = 0 7 + 0 = -7 + 20x + -20x 7 = -7 + 20x + -20x Combine like terms: 20x + -20x = 0 7 = -7 + 0 7 = -7 Solving 7 = -7 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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