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Simplifying (2x + 15) = 90 Reorder the terms: (15 + 2x) = 90 Remove parenthesis around (15 + 2x) 15 + 2x = 90 Solving 15 + 2x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 2x = 90 + -15 Combine like terms: 15 + -15 = 0 0 + 2x = 90 + -15 2x = 90 + -15 Combine like terms: 90 + -15 = 75 2x = 75 Divide each side by '2'. x = 37.5 Simplifying x = 37.5
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