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Simplifying 280 = 2(x + 40) + (2x) Reorder the terms: 280 = 2(40 + x) + (2x) 280 = (40 * 2 + x * 2) + (2x) 280 = (80 + 2x) + (2x) Combine like terms: 2x + (2x) = 4x 280 = 80 + 4x Solving 280 = 80 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 280 + -4x = 80 + 4x + -4x Combine like terms: 4x + -4x = 0 280 + -4x = 80 + 0 280 + -4x = 80 Add '-280' to each side of the equation. 280 + -280 + -4x = 80 + -280 Combine like terms: 280 + -280 = 0 0 + -4x = 80 + -280 -4x = 80 + -280 Combine like terms: 80 + -280 = -200 -4x = -200 Divide each side by '-4'. x = 50 Simplifying x = 50
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