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Simplifying 140 = 40x + 20 Reorder the terms: 140 = 20 + 40x Solving 140 = 20 + 40x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40x' to each side of the equation. 140 + -40x = 20 + 40x + -40x Combine like terms: 40x + -40x = 0 140 + -40x = 20 + 0 140 + -40x = 20 Add '-140' to each side of the equation. 140 + -140 + -40x = 20 + -140 Combine like terms: 140 + -140 = 0 0 + -40x = 20 + -140 -40x = 20 + -140 Combine like terms: 20 + -140 = -120 -40x = -120 Divide each side by '-40'. x = 3 Simplifying x = 3
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