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Simplifying -5(4 + x) = -80 (4 * -5 + x * -5) = -80 (-20 + -5x) = -80 Solving -20 + -5x = -80 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -5x = -80 + 20 Combine like terms: -20 + 20 = 0 0 + -5x = -80 + 20 -5x = -80 + 20 Combine like terms: -80 + 20 = -60 -5x = -60 Divide each side by '-5'. x = 12 Simplifying x = 12
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