Пошаговое объяснение:
1/2 = 15/2*15=15/30
2/3 = (2*10)/(3*10)= 20/30
1/5 = 6/30
2/5 = (2*6)/(5*6)=12/30
4/5=(4*6)/(5*6)=24/30
1/6 =5/30
5/6= (5*5/(6*5)=25/30
3/10 = 9/30
7/10 = 21/30
9/10=27/30
Пошаговое объяснение:
1/2 = 15/2*15=15/30
2/3 = (2*10)/(3*10)= 20/30
1/5 = 6/30
2/5 = (2*6)/(5*6)=12/30
4/5=(4*6)/(5*6)=24/30
1/6 =5/30
5/6= (5*5/(6*5)=25/30
3/10 = 9/30
7/10 = 21/30
9/10=27/30