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Simplifying x + -42 = 15 + -2x Reorder the terms: -42 + x = 15 + -2x Solving -42 + x = 15 + -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. -42 + x + 2x = 15 + -2x + 2x Combine like terms: x + 2x = 3x -42 + 3x = 15 + -2x + 2x Combine like terms: -2x + 2x = 0 -42 + 3x = 15 + 0 -42 + 3x = 15 Add '42' to each side of the equation. -42 + 42 + 3x = 15 + 42 Combine like terms: -42 + 42 = 0 0 + 3x = 15 + 42 3x = 15 + 42 Combine like terms: 15 + 42 = 57 3x = 57 Divide each side by '3'. x = 19 Simplifying x = 19
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