[tex]\begin{gathered} 1. \\ \Rightarrow2\frac{1}{4}-\frac{3}{8} \\ \Rightarrow\frac{9}{4}-\frac{3}{8} \\ \Rightarrow\frac{18-3}{8} \\ \Rightarrow\frac{15}{8} \end{gathered}[/tex][tex]\begin{gathered} \Rightarrow\frac{11}{5}\times\frac{10}{3} \\ \Rightarrow\frac{22}{3} \end{gathered}[/tex]
