1 1/35÷4/5=36/35÷4/5=36/35*5/4=9/7
9/7-1 8/35=9/7-43/35=45/35-43/35=2/35
2/35*3 1/3=2/35*10/3=4/21
3/4 от 36=36/4*3=27
6/8 от 72=72/8*6=54
4/7 от 63=63/7*4=36
2/9 от 81=81/9*2=18
5/6 от 540=540/6*5=450
3/7 от 560=560/7*3=240
3/4 от 520=520/4*3=390
2/3 от 360=360/3*2=240