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Simplifying 75 + 2u = 15 + 5u Solving 75 + 2u = 15 + 5u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5u' to each side of the equation. 75 + 2u + -5u = 15 + 5u + -5u Combine like terms: 2u + -5u = -3u 75 + -3u = 15 + 5u + -5u Combine like terms: 5u + -5u = 0 75 + -3u = 15 + 0 75 + -3u = 15 Add '-75' to each side of the equation. 75 + -75 + -3u = 15 + -75 Combine like terms: 75 + -75 = 0 0 + -3u = 15 + -75 -3u = 15 + -75 Combine like terms: 15 + -75 = -60 -3u = -60 Divide each side by '-3'. u = 20 Simplifying u = 20
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