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Simplifying 10x + 42 = 20 + -1x Reorder the terms: 42 + 10x = 20 + -1x Solving 42 + 10x = 20 + -1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x' to each side of the equation. 42 + 10x + x = 20 + -1x + x Combine like terms: 10x + x = 11x 42 + 11x = 20 + -1x + x Combine like terms: -1x + x = 0 42 + 11x = 20 + 0 42 + 11x = 20 Add '-42' to each side of the equation. 42 + -42 + 11x = 20 + -42 Combine like terms: 42 + -42 = 0 0 + 11x = 20 + -42 11x = 20 + -42 Combine like terms: 20 + -42 = -22 11x = -22 Divide each side by '11'. x = -2 Simplifying x = -2
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