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Simplifying (x + 2) + (2x) = 138 Reorder the terms: (2 + x) + (2x) = 138 Remove parenthesis around (2 + x) 2 + x + (2x) = 138 Combine like terms: x + (2x) = 3x 2 + 3x = 138 Solving 2 + 3x = 138 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 + 3x = 138 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 138 + -2 3x = 138 + -2 Combine like terms: 138 + -2 = 136 3x = 136 Divide each side by '3'. x = 45.33333333 Simplifying x = 45.33333333
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