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Simplifying -2[8 + -5(2 + -3x) + -7x] = (4x + -9) -2[8 + (2 * -5 + -3x * -5) + -7x] = (4x + -9) -2[8 + (-10 + 15x) + -7x] = (4x + -9) Combine like terms: 8 + -10 = -2 -2[-2 + 15x + -7x] = (4x + -9) Combine like terms: 15x + -7x = 8x -2[-2 + 8x] = (4x + -9) [-2 * -2 + 8x * -2] = (4x + -9) [4 + -16x] = (4x + -9) Reorder the terms: 4 + -16x = (-9 + 4x) Remove parenthesis around (-9 + 4x) 4 + -16x = -9 + 4x Solving 4 + -16x = -9 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 4 + -16x + -4x = -9 + 4x + -4x Combine like terms: -16x + -4x = -20x 4 + -20x = -9 + 4x + -4x Combine like terms: 4x + -4x = 0 4 + -20x = -9 + 0 4 + -20x = -9 Add '-4' to each side of the equation. 4 + -4 + -20x = -9 + -4 Combine like terms: 4 + -4 = 0 0 + -20x = -9 + -4 -20x = -9 + -4 Combine like terms: -9 + -4 = -13 -20x = -13 Divide each side by '-20'. x = 0.65 Simplifying x = 0.65
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