1) 3/10х = 2 целых 1/4 2) 2/20х = 1 целая 4/5 3) 28/32х = 2 целых 1/6 4) 11/16х = 3/4

1) 3/10х = 2 1/4
x=9/4×10/3
x=15/2=7 1/2

2) 2/20х = 1 4/5
x=9/5×10/1=18

3) 28/32х = 2 1/6
x=13/6×32/28=208/84=2 10/21

4) 11/16х = 3/4
x=3/4×16/11=12/11=1 1/11