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Simplifying 5u + -80 = 4u Reorder the terms: -80 + 5u = 4u Solving -80 + 5u = 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. -80 + 5u + -4u = 4u + -4u Combine like terms: 5u + -4u = 1u -80 + 1u = 4u + -4u Combine like terms: 4u + -4u = 0 -80 + 1u = 0 Add '80' to each side of the equation. -80 + 80 + 1u = 0 + 80 Combine like terms: -80 + 80 = 0 0 + 1u = 0 + 80 1u = 0 + 80 Combine like terms: 0 + 80 = 80 1u = 80 Divide each side by '1'. u = 80 Simplifying u = 80
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