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Simplifying u + -3 + 2u = u + 13 Reorder the terms: -3 + u + 2u = u + 13 Combine like terms: u + 2u = 3u -3 + 3u = u + 13 Reorder the terms: -3 + 3u = 13 + u Solving -3 + 3u = 13 + u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1u' to each side of the equation. -3 + 3u + -1u = 13 + u + -1u Combine like terms: 3u + -1u = 2u -3 + 2u = 13 + u + -1u Combine like terms: u + -1u = 0 -3 + 2u = 13 + 0 -3 + 2u = 13 Add '3' to each side of the equation. -3 + 3 + 2u = 13 + 3 Combine like terms: -3 + 3 = 0 0 + 2u = 13 + 3 2u = 13 + 3 Combine like terms: 13 + 3 = 16 2u = 16 Divide each side by '2'. u = 8 Simplifying u = 8
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