ократить дроби: 2/4;12/16;6/10;20/24; 3/9;24/36; 6/15; 32/40; 28/36; 48/72; 28/56; 60/96; 48/60; 72/90; 40/84; 60/100.

1/1  6/8  3/5  10/12  = 5/6   1/3 6/9=2/3  3/5 8/10= 4/5 7/96/9= 2/34/8= 2/4=1/210/16=5/68/10=4/5  8/10=4/510/213/50 ( делила на 20)