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Simplifying 2u + -81 = u + -30 Reorder the terms: -81 + 2u = u + -30 Reorder the terms: -81 + 2u = -30 + u Solving -81 + 2u = -30 + 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. -81 + 2u + -1u = -30 + u + -1u Combine like terms: 2u + -1u = 1u -81 + 1u = -30 + u + -1u Combine like terms: u + -1u = 0 -81 + 1u = -30 + 0 -81 + 1u = -30 Add '81' to each side of the equation. -81 + 81 + 1u = -30 + 81 Combine like terms: -81 + 81 = 0 0 + 1u = -30 + 81 1u = -30 + 81 Combine like terms: -30 + 81 = 51 1u = 51 Divide each side by '1'. u = 51 Simplifying u = 51
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