Сократите дроби и запишите их в виде 12 /15 : 21/35 :12 /30 : 45/50 :18/90 : 56 /80 : 9 /12 : 21 /60.

4/5. 3/5. 2/5. 9/10. 1/5. 7/10. 3/4. 7/20

[latex] \frac{12}{15} = \frac{4}{5} [/latex]. [latex] \frac{21}{35} = \frac{3}{5} [/latex]. [latex] \frac{12}{30} = \frac{2}{5} [/latex]. [latex] \frac{45}{50} = \frac{9}{10} [/latex]. [latex] \frac{18}{90} = \frac{1}{5} [/latex]. [latex] \frac{56}{80} = \frac{7}{10} [/latex]. [latex] \frac{9}{12} = \frac{3}{4} [/latex]. [latex] \frac{21}{60} = \frac{7}{20} [/latex].