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Simplifying -20 = -6u + 2u + 12 Reorder the terms: -20 = 12 + -6u + 2u Combine like terms: -6u + 2u = -4u -20 = 12 + -4u Solving -20 = 12 + -4u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '4u' to each side of the equation. -20 + 4u = 12 + -4u + 4u Combine like terms: -4u + 4u = 0 -20 + 4u = 12 + 0 -20 + 4u = 12 Add '20' to each side of the equation. -20 + 20 + 4u = 12 + 20 Combine like terms: -20 + 20 = 0 0 + 4u = 12 + 20 4u = 12 + 20 Combine like terms: 12 + 20 = 32 4u = 32 Divide each side by '4'. u = 8 Simplifying u = 8
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