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Simplifying 2x + 7 + 28 = 40 Reorder the terms: 7 + 28 + 2x = 40 Combine like terms: 7 + 28 = 35 35 + 2x = 40 Solving 35 + 2x = 40 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-35' to each side of the equation. 35 + -35 + 2x = 40 + -35 Combine like terms: 35 + -35 = 0 0 + 2x = 40 + -35 2x = 40 + -35 Combine like terms: 40 + -35 = 5 2x = 5 Divide each side by '2'. x = 2.5 Simplifying x = 2.5
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