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Simplifying 4(5x + 7) = -172 Reorder the terms: 4(7 + 5x) = -172 (7 * 4 + 5x * 4) = -172 (28 + 20x) = -172 Solving 28 + 20x = -172 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 + 20x = -172 + -28 Combine like terms: 28 + -28 = 0 0 + 20x = -172 + -28 20x = -172 + -28 Combine like terms: -172 + -28 = -200 20x = -200 Divide each side by '20'. x = -10 Simplifying x = -10
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