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Simplifying -4(2 + -1x) = x + 9 (2 * -4 + -1x * -4) = x + 9 (-8 + 4x) = x + 9 Reorder the terms: -8 + 4x = 9 + x Solving -8 + 4x = 9 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -8 + 4x + -1x = 9 + x + -1x Combine like terms: 4x + -1x = 3x -8 + 3x = 9 + x + -1x Combine like terms: x + -1x = 0 -8 + 3x = 9 + 0 -8 + 3x = 9 Add '8' to each side of the equation. -8 + 8 + 3x = 9 + 8 Combine like terms: -8 + 8 = 0 0 + 3x = 9 + 8 3x = 9 + 8 Combine like terms: 9 + 8 = 17 3x = 17 Divide each side by '3'. x = 5.666666667 Simplifying x = 5.666666667
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