Надо Вычислить. 25/28-2/21, 41/54-35/72, 20/21-3/14, 40/143+39/110, 43/140+41/150,...

Question

Надо Вычислить. 25/28-2/21, 41/54-35/72, 20/21-3/14, 40/143+39/110, 43/140+41/150, 73/80-37/100.

Answer 1

25/28-2/21=75/84-8/84=63/84
41/54-35/72=328/432-210/432=118/432
20/21-3/14=40/42-9/42=31/42
40/143+39/110=сорян.....
43/140...........тоже сорян
73/80-37/100=3650/4000-1480/4000=2170/4000