Обыкновенные дроби 1/3; 2/3; 1/5; 2/5; 4/5; 1/6; 5/6; 3/10; 7/10; 9/10 к рбыкновенной дроби со знаменателем 30

Держи))
1/3= 10/30
2/3= 20/30
1/5= 6/30
2/5=12/30
4/5=24/30
1/6= 5/30
5/6= 25/30
3/10= 9/30
7/10= 21/30
9/10=27/30

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