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Simplifying 21 + -1x = 42x Solving 21 + -1x = 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. 21 + -1x + -42x = 42x + -42x Combine like terms: -1x + -42x = -43x 21 + -43x = 42x + -42x Combine like terms: 42x + -42x = 0 21 + -43x = 0 Add '-21' to each side of the equation. 21 + -21 + -43x = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -43x = 0 + -21 -43x = 0 + -21 Combine like terms: 0 + -21 = -21 -43x = -21 Divide each side by '-43'. x = 0.488372093 Simplifying x = 0.488372093
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