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Simplifying -140 = -7(2x + 4) Reorder the terms: -140 = -7(4 + 2x) -140 = (4 * -7 + 2x * -7) -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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