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Simplifying 2x + 1 = 9 Reorder the terms: 1 + 2x = 9 Solving 1 + 2x = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 9 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 9 + -1 2x = 9 + -1 Combine like terms: 9 + -1 = 8 2x = 8 Divide each side by '2'. x = 4 Simplifying x = 4
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