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Simplifying 2x + 3 + 5x = 18 Reorder the terms: 3 + 2x + 5x = 18 Combine like terms: 2x + 5x = 7x 3 + 7x = 18 Solving 3 + 7x = 18 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 = 18 + -3 Combine like terms: 3 + -3 = 0 0 + 7x = 18 + -3 7x = 18 + -3 Combine like terms: 18 + -3 = 15 7x = 15 Divide each side by '7'. x = 2.142857143 Simplifying x = 2.142857143
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