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Simplifying 12u + -91 = 5u Reorder the terms: -91 + 12u = 5u Solving -91 + 12u = 5u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5u' to each side of the equation. -91 + 12u + -5u = 5u + -5u Combine like terms: 12u + -5u = 7u -91 + 7u = 5u + -5u Combine like terms: 5u + -5u = 0 -91 + 7u = 0 Add '91' to each side of the equation. -91 + 91 + 7u = 0 + 91 Combine like terms: -91 + 91 = 0 0 + 7u = 0 + 91 7u = 0 + 91 Combine like terms: 0 + 91 = 91 7u = 91 Divide each side by '7'. u = 13 Simplifying u = 13
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