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Simplifying -1[3x + -1(2x + 5)] = -1[3(2x + -4) + -3x] Reorder the terms: -1[3x + -1(5 + 2x)] = -1[3(2x + -4) + -3x] -1[3x + (5 * -1 + 2x * -1)] = -1[3(2x + -4) + -3x] -1[3x + (-5 + -2x)] = -1[3(2x + -4) + -3x] Reorder the terms: -1[-5 + 3x + -2x] = -1[3(2x + -4) + -3x] Combine like terms: 3x + -2x = 1x -1[-5 + 1x] = -1[3(2x + -4) + -3x] [-5 * -1 + 1x * -1] = -1[3(2x + -4) + -3x] [5 + -1x] = -1[3(2x + -4) + -3x] Reorder the terms: 5 + -1x = -1[3(-4 + 2x) + -3x] 5 + -1x = -1[(-4 * 3 + 2x * 3) + -3x] 5 + -1x = -1[(-12 + 6x) + -3x] Combine like terms: 6x + -3x = 3x 5 + -1x = -1[-12 + 3x] 5 + -1x = [-12 * -1 + 3x * -1] 5 + -1x = [12 + -3x] Solving 5 + -1x = 12 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. 5 + -1x + 3x = 12 + -3x + 3x Combine like terms: -1x + 3x = 2x 5 + 2x = 12 + -3x + 3x Combine like terms: -3x + 3x = 0 5 + 2x = 12 + 0 5 + 2x = 12 Add '-5' to each side of the equation. 5 + -5 + 2x = 12 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 12 + -5 2x = 12 + -5 Combine like terms: 12 + -5 = 7 2x = 7 Divide each side by '2'. x = 3.5 Simplifying x = 3.5
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