Question

1целая7/9 *2целых2/5:1целая 3/5

Answer 1

1 7/9*2 2/5= 1*9 + 7/9 *2*5 + 2/5  =16/9*12/5=16 *12/9 *5=  192/45=64*3/15*3=  =64/15=4 4/15

4 4/15 : 1 3/5 = 64/15:8/5= 64/15*5/8= 64 *5/15 *8=320/120 =8*40/3*40=8/3 =2  2/3