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Simplifying 45 = 2x + -42 Reorder the terms: 45 = -42 + 2x Solving 45 = -42 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 45 + -2x = -42 + 2x + -2x Combine like terms: 2x + -2x = 0 45 + -2x = -42 + 0 45 + -2x = -42 Add '-45' to each side of the equation. 45 + -45 + -2x = -42 + -45 Combine like terms: 45 + -45 = 0 0 + -2x = -42 + -45 -2x = -42 + -45 Combine like terms: -42 + -45 = -87 -2x = -87 Divide each side by '-2'. x = 43.5 Simplifying x = 43.5
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