Question

1. \\( 5\frac{1}{2} - u = \frac{9}{4} \\)

Explanation:

Step1: Convert mixed number to fraction

$5\frac{1}{2} = \frac{11}{2}$

Step2: Rearrange to isolate $u$

$u = \frac{11}{2} - \frac{9}{4}$

Step3: Find common denominator

$\frac{11}{2} = \frac{22}{4}$

Step4: Subtract fractions

$u = \frac{22}{4} - \frac{9}{4} = \frac{13}{4}$

Answer:

$u = \frac{13}{4}$ or $3\frac{1}{4}$