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Simplifying 140 = 7 + -7(2x + -3) Reorder the terms: 140 = 7 + -7(-3 + 2x) 140 = 7 + (-3 * -7 + 2x * -7) 140 = 7 + (21 + -14x) Combine like terms: 7 + 21 = 28 140 = 28 + -14x Solving 140 = 28 + -14x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14x' to each side of the equation. 140 + 14x = 28 + -14x + 14x Combine like terms: -14x + 14x = 0 140 + 14x = 28 + 0 140 + 14x = 28 Add '-140' to each side of the equation. 140 + -140 + 14x = 28 + -140 Combine like terms: 140 + -140 = 0 0 + 14x = 28 + -140 14x = 28 + -140 Combine like terms: 28 + -140 = -112 14x = -112 Divide each side by '14'. x = -8 Simplifying x = -8
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