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Simplifying 3(x + 2) + 2x + (x + 1) = 126 Reorder the terms: 3(2 + x) + 2x + (x + 1) = 126 (2 * 3 + x * 3) + 2x + (x + 1) = 126 (6 + 3x) + 2x + (x + 1) = 126 Reorder the terms: 6 + 3x + 2x + (1 + x) = 126 Remove parenthesis around (1 + x) 6 + 3x + 2x + 1 + x = 126 Reorder the terms: 6 + 1 + 3x + 2x + x = 126 Combine like terms: 6 + 1 = 7 7 + 3x + 2x + x = 126 Combine like terms: 3x + 2x = 5x 7 + 5x + x = 126 Combine like terms: 5x + x = 6x 7 + 6x = 126 Solving 7 + 6x = 126 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 6x = 126 + -7 Combine like terms: 7 + -7 = 0 0 + 6x = 126 + -7 6x = 126 + -7 Combine like terms: 126 + -7 = 119 6x = 119 Divide each side by '6'. x = 19.83333333 Simplifying x = 19.83333333
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