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Simplifying 140 + -3x = 42x + 20 Reorder the terms: 140 + -3x = 20 + 42x Solving 140 + -3x = 20 + 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 140 + -3x + -42x = 20 + 42x + -42x Combine like terms: -3x + -42x = -45x 140 + -45x = 20 + 42x + -42x Combine like terms: 42x + -42x = 0 140 + -45x = 20 + 0 140 + -45x = 20 Add '-140' to each side of the equation. 140 + -140 + -45x = 20 + -140 Combine like terms: 140 + -140 = 0 0 + -45x = 20 + -140 -45x = 20 + -140 Combine like terms: 20 + -140 = -120 -45x = -120 Divide each side by '-45'. x = 2.666666667 Simplifying x = 2.666666667
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