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Simplifying 141 + -3x = 42x + 21 Reorder the terms: 141 + -3x = 21 + 42x Solving 141 + -3x = 21 + 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. 141 + -3x + -42x = 21 + 42x + -42x Combine like terms: -3x + -42x = -45x 141 + -45x = 21 + 42x + -42x Combine like terms: 42x + -42x = 0 141 + -45x = 21 + 0 141 + -45x = 21 Add '-141' to each side of the equation. 141 + -141 + -45x = 21 + -141 Combine like terms: 141 + -141 = 0 0 + -45x = 21 + -141 -45x = 21 + -141 Combine like terms: 21 + -141 = -120 -45x = -120 Divide each side by '-45'. x = 2.666666667 Simplifying x = 2.666666667
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