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Simplifying -189 = -9(5x + -15) Reorder the terms: -189 = -9(-15 + 5x) -189 = (-15 * -9 + 5x * -9) -189 = (135 + -45x) Solving -189 = 135 + -45x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '45x' to each side of the equation. -189 + 45x = 135 + -45x + 45x Combine like terms: -45x + 45x = 0 -189 + 45x = 135 + 0 -189 + 45x = 135 Add '189' to each side of the equation. -189 + 189 + 45x = 135 + 189 Combine like terms: -189 + 189 = 0 0 + 45x = 135 + 189 45x = 135 + 189 Combine like terms: 135 + 189 = 324 45x = 324 Divide each side by '45'. x = 7.2 Simplifying x = 7.2
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