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Simplifying 3 + 4x = 12 + 2x Solving 3 + 4x = 12 + 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. 3 + 4x + -2x = 12 + 2x + -2x Combine like terms: 4x + -2x = 2x 3 + 2x = 12 + 2x + -2x Combine like terms: 2x + -2x = 0 3 + 2x = 12 + 0 3 + 2x = 12 Add '-3' to each side of the equation. 3 + -3 + 2x = 12 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 12 + -3 2x = 12 + -3 Combine like terms: 12 + -3 = 9 2x = 9 Divide each side by '2'. x = 4.5 Simplifying x = 4.5
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