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Simplifying 3x + -1x + -2 = 12 Reorder the terms: -2 + 3x + -1x = 12 Combine like terms: 3x + -1x = 2x -2 + 2x = 12 Solving -2 + 2x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 2x = 12 + 2 Combine like terms: -2 + 2 = 0 0 + 2x = 12 + 2 2x = 12 + 2 Combine like terms: 12 + 2 = 14 2x = 14 Divide each side by '2'. x = 7 Simplifying x = 7
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