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Simplifying 20x + -40 = 20x + -20 Reorder the terms: -40 + 20x = 20x + -20 Reorder the terms: -40 + 20x = -20 + 20x Add '-20x' to each side of the equation. -40 + 20x + -20x = -20 + 20x + -20x Combine like terms: 20x + -20x = 0 -40 + 0 = -20 + 20x + -20x -40 = -20 + 20x + -20x Combine like terms: 20x + -20x = 0 -40 = -20 + 0 -40 = -20 Solving -40 = -20 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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