[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{question:}}}}[/tex]
[tex]✏ \: at \: the \: picture ⤴[/tex]
[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{answer:}}}}[/tex]
[tex]11. \: 3 \frac{3}{4} + \frac{4}{5} = 4 \frac{11}{20} \: = \: yi[/tex]
[tex]12. \: 3 \frac{7}{12} - 2 \frac{1}{5} = 1 \frac{23}{60} \: = \: er[/tex]
[tex]13. \: 8 \times \frac{4}{10} = 3 \frac{1}{5} \: = \: san[/tex]
[tex]14. \: \frac{3}{4} \times \frac{8}{12} = \frac{1}{2} \: = \: si[/tex]
[tex]15. \: \frac{4}{5} \times \frac{7}{9} = \frac{28}{45}\: = \: wu [/tex]
Answer: yi er san si wu
[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{explanition:}}}}[/tex]
[tex]yi \:means \:1[/tex]
[tex]er \:means \:2[/tex]
[tex]san \:means\: 3[/tex]
[tex]si \:means\: 4\: and[/tex]
[tex]wu \:means\: 5[/tex]
[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{hope \: it \: helps \: you}}}}[/tex]
[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{carry \: on \: learning}}}}[/tex]
