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Simplifying 20 + -2x = 40 + -42x Solving 20 + -2x = 40 + -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. 20 + -2x + 42x = 40 + -42x + 42x Combine like terms: -2x + 42x = 40x 20 + 40x = 40 + -42x + 42x Combine like terms: -42x + 42x = 0 20 + 40x = 40 + 0 20 + 40x = 40 Add '-20' to each side of the equation. 20 + -20 + 40x = 40 + -20 Combine like terms: 20 + -20 = 0 0 + 40x = 40 + -20 40x = 40 + -20 Combine like terms: 40 + -20 = 20 40x = 20 Divide each side by '40'. x = 0.5 Simplifying x = 0.5
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