Fill in the Blank

To rewrite 1u\frac{1}{u} with the LCD u(u−1)u(u-1), multiply the numerator 11 by _____.

When combining rational expressions such as 2uu−1+1u−2u−1u2−u\frac{2u}{u-1} + \frac{1}{u} - \frac{2u-1}{u^2-u}, each fraction is rewritten over the least common denominator u(u−1)u(u-1).

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Updated 2026-09-20

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