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Simplifying 3(2x + 1) + x = 39 Reorder the terms: 3(1 + 2x) + x = 39 (1 * 3 + 2x * 3) + x = 39 (3 + 6x) + x = 39 Combine like terms: 6x + x = 7x 3 + 7x = 39 Solving 3 + 7x = 39 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 7x = 39 + -3 Combine like terms: 3 + -3 = 0 0 + 7x = 39 + -3 7x = 39 + -3 Combine like terms: 39 + -3 = 36 7x = 36 Divide each side by '7'. x = 5.142857143 Simplifying x = 5.142857143
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