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Simplifying 2u + -1 = -4 + u Reorder the terms: -1 + 2u = -4 + u Solving -1 + 2u = -4 + 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. -1 + 2u + -1u = -4 + u + -1u Combine like terms: 2u + -1u = 1u -1 + 1u = -4 + u + -1u Combine like terms: u + -1u = 0 -1 + 1u = -4 + 0 -1 + 1u = -4 Add '1' to each side of the equation. -1 + 1 + 1u = -4 + 1 Combine like terms: -1 + 1 = 0 0 + 1u = -4 + 1 1u = -4 + 1 Combine like terms: -4 + 1 = -3 1u = -3 Divide each side by '1'. u = -3 Simplifying u = -3
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