№ 80 и 81 !!!!!!!!!!!! срочно!!!!!!!!!!
20/7=2 6/7 43/10=4 3/10 209/100=2 9/100 16/3=5 1/3 9/4=2 1/4 54/5=10 4/5 89/25=3 14/25 24/11=2 2/11 105/9=11 6/9=11 2/3 545/120=4 65/120=4 13/24