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