Problem
\( \begin{array}{r}3 \frac{1}{3} \\ +\quad 7 \frac{3}{4} \\ \hline\end{array} \)
Solution
Step 1 ：\( 3 \frac{1}{3} = 3 + \frac{1}{3} \)
Step 2 ：\( 7 \frac{3}{4} = 7 + \frac{3}{4} \)
Step 3 ：\( (3 + \frac{1}{3}) + (7 + \frac{3}{4}) = \frac{10}{3} + \frac{31}{4} \)
