Question

3/4•5/7
7/9•3/7
5/8•1 1/15
5-1 1/9•2 2/5

Answer 1

3/4*5/7=15/28.
7/9*3/7=3/9=1/3
5/8*1 1/15=5/8*16/15=2/3
5-1 1/9*2 2/5=5-10/9*12/5=5-8/3=5-2 2/3=2 1/3