Пошаговое объяснение:
15/8÷25/6=15/8×6/25=9/20;
20/3÷25/9=20/3×9/25=12/5=2 2/5
16/3÷32/9=16/3×9/32=3/2=1 1/2
32/5÷16/9=32/5× 9/16=18/5=3 3/5
16/22+3/22=19/22; 19/22÷5/11=19/22×11/5=19/10=1 9/10
21/36-20/36=1/36; 17/36÷1/36=17/36×36/1=17
9/48+10/48=19/48; 19/24÷19/48=19/24×48/19=2
