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Simplifying 42 = -0.2x + 50 Reorder the terms: 42 = 50 + -0.2x Solving 42 = 50 + -0.2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2x' to each side of the equation. 42 + 0.2x = 50 + -0.2x + 0.2x Combine like terms: -0.2x + 0.2x = 0.0 42 + 0.2x = 50 + 0.0 42 + 0.2x = 50 Add '-42' to each side of the equation. 42 + -42 + 0.2x = 50 + -42 Combine like terms: 42 + -42 = 0 0 + 0.2x = 50 + -42 0.2x = 50 + -42 Combine like terms: 50 + -42 = 8 0.2x = 8 Divide each side by '0.2'. x = 40 Simplifying x = 40
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