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Simplifying -1u + -2 = 2u + -20 Reorder the terms: -2 + -1u = 2u + -20 Reorder the terms: -2 + -1u = -20 + 2u Solving -2 + -1u = -20 + 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. -2 + -1u + -2u = -20 + 2u + -2u Combine like terms: -1u + -2u = -3u -2 + -3u = -20 + 2u + -2u Combine like terms: 2u + -2u = 0 -2 + -3u = -20 + 0 -2 + -3u = -20 Add '2' to each side of the equation. -2 + 2 + -3u = -20 + 2 Combine like terms: -2 + 2 = 0 0 + -3u = -20 + 2 -3u = -20 + 2 Combine like terms: -20 + 2 = -18 -3u = -18 Divide each side by '-3'. u = 6 Simplifying u = 6
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