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Simplifying 7u + 9 = 51 Reorder the terms: 9 + 7u = 51 Solving 9 + 7u = 51 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 7u = 51 + -9 Combine like terms: 9 + -9 = 0 0 + 7u = 51 + -9 7u = 51 + -9 Combine like terms: 51 + -9 = 42 7u = 42 Divide each side by '7'. u = 6 Simplifying u = 6
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