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Simplifying (4 + x) = 3x Remove parenthesis around (4 + x) 4 + x = 3x Solving 4 + x = 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 4 + x + -3x = 3x + -3x Combine like terms: x + -3x = -2x 4 + -2x = 3x + -3x Combine like terms: 3x + -3x = 0 4 + -2x = 0 Add '-4' to each side of the equation. 4 + -4 + -2x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -2x = 0 + -4 -2x = 0 + -4 Combine like terms: 0 + -4 = -4 -2x = -4 Divide each side by '-2'. x = 2 Simplifying x = 2
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