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Simplifying 3x + (x + 2) = 128 Reorder the terms: 3x + (2 + x) = 128 Remove parenthesis around (2 + x) 3x + 2 + x = 128 Reorder the terms: 2 + 3x + x = 128 Combine like terms: 3x + x = 4x 2 + 4x = 128 Solving 2 + 4x = 128 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 = 128 + -2 Combine like terms: 2 + -2 = 0 0 + 4x = 128 + -2 4x = 128 + -2 Combine like terms: 128 + -2 = 126 4x = 126 Divide each side by '4'. x = 31.5 Simplifying x = 31.5
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