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Simplifying -140 = 7(-5x + 15) Reorder the terms: -140 = 7(15 + -5x) -140 = (15 * 7 + -5x * 7) -140 = (105 + -35x) Solving -140 = 105 + -35x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '35x' to each side of the equation. -140 + 35x = 105 + -35x + 35x Combine like terms: -35x + 35x = 0 -140 + 35x = 105 + 0 -140 + 35x = 105 Add '140' to each side of the equation. -140 + 140 + 35x = 105 + 140 Combine like terms: -140 + 140 = 0 0 + 35x = 105 + 140 35x = 105 + 140 Combine like terms: 105 + 140 = 245 35x = 245 Divide each side by '35'. x = 7 Simplifying x = 7
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