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Simplifying u + 7 = 2u Reorder the terms: 7 + u = 2u Solving 7 + 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. 7 + u + -2u = 2u + -2u Combine like terms: u + -2u = -1u 7 + -1u = 2u + -2u Combine like terms: 2u + -2u = 0 7 + -1u = 0 Add '-7' to each side of the equation. 7 + -7 + -1u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1u = 0 + -7 -1u = 0 + -7 Combine like terms: 0 + -7 = -7 -1u = -7 Divide each side by '-1'. u = 7 Simplifying u = 7
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