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Simplifying 5u + -12 = u + 20 Reorder the terms: -12 + 5u = u + 20 Reorder the terms: -12 + 5u = 20 + u Solving -12 + 5u = 20 + u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1u' to each side of the equation. -12 + 5u + -1u = 20 + u + -1u Combine like terms: 5u + -1u = 4u -12 + 4u = 20 + u + -1u Combine like terms: u + -1u = 0 -12 + 4u = 20 + 0 -12 + 4u = 20 Add '12' to each side of the equation. -12 + 12 + 4u = 20 + 12 Combine like terms: -12 + 12 = 0 0 + 4u = 20 + 12 4u = 20 + 12 Combine like terms: 20 + 12 = 32 4u = 32 Divide each side by '4'. u = 8 Simplifying u = 8
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