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Simplifying u + 13 = 2u Reorder the terms: 13 + u = 2u Solving 13 + u = 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. 13 + u + -2u = 2u + -2u Combine like terms: u + -2u = -1u 13 + -1u = 2u + -2u Combine like terms: 2u + -2u = 0 13 + -1u = 0 Add '-13' to each side of the equation. 13 + -13 + -1u = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1u = 0 + -13 -1u = 0 + -13 Combine like terms: 0 + -13 = -13 -1u = -13 Divide each side by '-1'. u = 13 Simplifying u = 13
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