solution 1:
[tex]\rightarrow \sf 7 * 3\dfrac{1}{5}[/tex]
[tex]\rightarrow \sf 7 * \dfrac{16}{5}[/tex]
[tex]\rightarrow \sf \dfrac{112}{5}[/tex]
[tex]\rightarrow \sf 22\dfrac{2}{5}[/tex]
solution 2:
[tex]\rightarrow \sf 5\dfrac{4}{10}*2[/tex]
[tex]\rightarrow \sf \dfrac{54}{10}*2[/tex]
[tex]\rightarrow \sf \dfrac{108}{10}[/tex]
[tex]\rightarrow \sf 10\dfrac{8}{10}[/tex]
