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Simplifying 7(u + -81) = 49 Reorder the terms: 7(-81 + u) = 49 (-81 * 7 + u * 7) = 49 (-567 + 7u) = 49 Solving -567 + 7u = 49 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '567' to each side of the equation. -567 + 567 + 7u = 49 + 567 Combine like terms: -567 + 567 = 0 0 + 7u = 49 + 567 7u = 49 + 567 Combine like terms: 49 + 567 = 616 7u = 616 Divide each side by '7'. u = 88 Simplifying u = 88
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