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Simplifying -2x + 3(-4x + 5) = -139 Reorder the terms: -2x + 3(5 + -4x) = -139 -2x + (5 * 3 + -4x * 3) = -139 -2x + (15 + -12x) = -139 Reorder the terms: 15 + -2x + -12x = -139 Combine like terms: -2x + -12x = -14x 15 + -14x = -139 Solving 15 + -14x = -139 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -14x = -139 + -15 Combine like terms: 15 + -15 = 0 0 + -14x = -139 + -15 -14x = -139 + -15 Combine like terms: -139 + -15 = -154 -14x = -154 Divide each side by '-14'. x = 11 Simplifying x = 11
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