20 б! 5 5/9-4 1/12 8 1 /4 - 3 5/18 7 5/12- 5 5/8 5 - 1 1/3 - 1 1/3 1 1/2 - 3/4 + 7/8 4 - (1 1/3- 5/9) 2 5/6 - 1 1/3 - 1/2 какое из чисел меньше: 1 5/9 или 1 1/3 и на сколько?

=5 20/36-4 3/36=1 17/36
=8 9/36-3 10/36=7 45/36-3 10/36=4 35/36
=7 10/24-5 15/24=6 34/24-5 15/24=1 19/24

=4 3/3-1 1/3-1 1/3=2 1/3
=1 4/8-6/8+7/8=1 5/8
=3 9/9-(12/9-5/9)=3 9/9-7/9=3 2/9
=2 5/6-1 2/6-3/6=1

1 5/9   >  1 3/9
1 5/9-1 3/9=2/9
на 2/9 больше