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Simplifying -18 = 2u + -12 Reorder the terms: -18 = -12 + 2u Solving -18 = -12 + 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. -18 + -2u = -12 + 2u + -2u Combine like terms: 2u + -2u = 0 -18 + -2u = -12 + 0 -18 + -2u = -12 Add '18' to each side of the equation. -18 + 18 + -2u = -12 + 18 Combine like terms: -18 + 18 = 0 0 + -2u = -12 + 18 -2u = -12 + 18 Combine like terms: -12 + 18 = 6 -2u = 6 Divide each side by '-2'. u = -3 Simplifying u = -3
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