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Simplifying 3x + x + 2 = 12 Reorder the terms: 2 + 3x + x = 12 Combine like terms: 3x + x = 4x 2 + 4x = 12 Solving 2 + 4x = 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 + 4x = 12 + -2 Combine like terms: 2 + -2 = 0 0 + 4x = 12 + -2 4x = 12 + -2 Combine like terms: 12 + -2 = 10 4x = 10 Divide each side by '4'. x = 2.5 Simplifying x = 2.5
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