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Simplifying 144 = -129(x + 5) Reorder the terms: 144 = -129(5 + x) 144 = (5 * -129 + x * -129) 144 = (-645 + -129x) Solving 144 = -645 + -129x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '129x' to each side of the equation. 144 + 129x = -645 + -129x + 129x Combine like terms: -129x + 129x = 0 144 + 129x = -645 + 0 144 + 129x = -645 Add '-144' to each side of the equation. 144 + -144 + 129x = -645 + -144 Combine like terms: 144 + -144 = 0 0 + 129x = -645 + -144 129x = -645 + -144 Combine like terms: -645 + -144 = -789 129x = -789 Divide each side by '129'. x = -6.11627907 Simplifying x = -6.11627907
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