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Simplifying -20 = 3u + -8 Reorder the terms: -20 = -8 + 3u Solving -20 = -8 + 3u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-3u' to each side of the equation. -20 + -3u = -8 + 3u + -3u Combine like terms: 3u + -3u = 0 -20 + -3u = -8 + 0 -20 + -3u = -8 Add '20' to each side of the equation. -20 + 20 + -3u = -8 + 20 Combine like terms: -20 + 20 = 0 0 + -3u = -8 + 20 -3u = -8 + 20 Combine like terms: -8 + 20 = 12 -3u = 12 Divide each side by '-3'. u = -4 Simplifying u = -4
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