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Simplifying -1x + 1 = -20 + 2x Reorder the terms: 1 + -1x = -20 + 2x Solving 1 + -1x = -20 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 1 + -1x + -2x = -20 + 2x + -2x Combine like terms: -1x + -2x = -3x 1 + -3x = -20 + 2x + -2x Combine like terms: 2x + -2x = 0 1 + -3x = -20 + 0 1 + -3x = -20 Add '-1' to each side of the equation. 1 + -1 + -3x = -20 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = -20 + -1 -3x = -20 + -1 Combine like terms: -20 + -1 = -21 -3x = -21 Divide each side by '-3'. x = 7 Simplifying x = 7
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