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Simplifying -12 = 6 + 3u Solving -12 = 6 + 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. -12 + -3u = 6 + 3u + -3u Combine like terms: 3u + -3u = 0 -12 + -3u = 6 + 0 -12 + -3u = 6 Add '12' to each side of the equation. -12 + 12 + -3u = 6 + 12 Combine like terms: -12 + 12 = 0 0 + -3u = 6 + 12 -3u = 6 + 12 Combine like terms: 6 + 12 = 18 -3u = 18 Divide each side by '-3'. u = -6 Simplifying u = -6
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