Question

7цiлихи-4/9  ,10цiлих-3цiлих 9/10,   7/8-3/4  ,    3/4-3/10

Answer 1

63/9-4/9=59/9=6 5/9
100/10-39/10=61/10=6 1/10=6,1
7/8-3/4=7/8-6/8=1/2
3/4-3/10=15/20-6/20=9/20