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Simplifying -7(2x + -4) = -42 Reorder the terms: -7(-4 + 2x) = -42 (-4 * -7 + 2x * -7) = -42 (28 + -14x) = -42 Solving 28 + -14x = -42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + -14x = -42 + -28 Combine like terms: 28 + -28 = 0 0 + -14x = -42 + -28 -14x = -42 + -28 Combine like terms: -42 + -28 = -70 -14x = -70 Divide each side by '-14'. x = 5 Simplifying x = 5
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