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Simplifying 20 + 5x = 5(x + -4) Reorder the terms: 20 + 5x = 5(-4 + x) 20 + 5x = (-4 * 5 + x * 5) 20 + 5x = (-20 + 5x) Add '-5x' to each side of the equation. 20 + 5x + -5x = -20 + 5x + -5x Combine like terms: 5x + -5x = 0 20 + 0 = -20 + 5x + -5x 20 = -20 + 5x + -5x Combine like terms: 5x + -5x = 0 20 = -20 + 0 20 = -20 Solving 20 = -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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