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Simplifying -1(4x + -7) = 9 Reorder the terms: -1(-7 + 4x) = 9 (-7 * -1 + 4x * -1) = 9 (7 + -4x) = 9 Solving 7 + -4x = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -4x = 9 + -7 Combine like terms: 7 + -7 = 0 0 + -4x = 9 + -7 -4x = 9 + -7 Combine like terms: 9 + -7 = 2 -4x = 2 Divide each side by '-4'. x = -0.5 Simplifying x = -0.5
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