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Simplifying -1(-8 + 4x) = -1(7x + 7) (-8 * -1 + 4x * -1) = -1(7x + 7) (8 + -4x) = -1(7x + 7) Reorder the terms: 8 + -4x = -1(7 + 7x) 8 + -4x = (7 * -1 + 7x * -1) 8 + -4x = (-7 + -7x) Solving 8 + -4x = -7 + -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. 8 + -4x + 7x = -7 + -7x + 7x Combine like terms: -4x + 7x = 3x 8 + 3x = -7 + -7x + 7x Combine like terms: -7x + 7x = 0 8 + 3x = -7 + 0 8 + 3x = -7 Add '-8' to each side of the equation. 8 + -8 + 3x = -7 + -8 Combine like terms: 8 + -8 = 0 0 + 3x = -7 + -8 3x = -7 + -8 Combine like terms: -7 + -8 = -15 3x = -15 Divide each side by '3'. x = -5 Simplifying x = -5
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