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Simplifying 25 = 2u + -15 Reorder the terms: 25 = -15 + 2u Solving 25 = -15 + 2u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-2u' to each side of the equation. 25 + -2u = -15 + 2u + -2u Combine like terms: 2u + -2u = 0 25 + -2u = -15 + 0 25 + -2u = -15 Add '-25' to each side of the equation. 25 + -25 + -2u = -15 + -25 Combine like terms: 25 + -25 = 0 0 + -2u = -15 + -25 -2u = -15 + -25 Combine like terms: -15 + -25 = -40 -2u = -40 Divide each side by '-2'. u = 20 Simplifying u = 20
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