(7/16+5/12)*1 7/41+1/39:(4/13-20/39)=(21/48+20/48)*48/41+1/39:912/39-20/39)=41/48*48/41+1/39:(-16/39)=1-1/39*39/16=1-1/16=15/16
2/495 - 7/825=10/2475-21/2475=-11/2475=-1/225
Нод ( 630,252 )=2*3*3*7=126
630=2*3*3*5*7 252=2*2*3*3*7
Нок ( 630, 252) =2*2*3*3*5*7=1260
(7/16+5/12)*1 7/41+1/39:(4/13-20/39)=(21/48+20/48)*48/41+1/39:912/39-20/39)=41/48*48/41+1/39:(-16/39)=1-1/39*39/16=1-1/16=15/16
2/495 - 7/825=10/2475-21/2475=-11/2475=-1/225
Нод ( 630,252 )=2*3*3*7=126
630=2*3*3*5*7 252=2*2*3*3*7
Нок ( 630, 252) =2*2*3*3*5*7=1260