Выполните действия: 1) 5 5/9 + 3 1/6 - 6 4/27; 3) 12 13/48 - (9 17/32 - 4 5/24); 2) 1 5/7 + 3 11/14 - 2 1/4; 4) (18 -

1) 5 5/9 + 3 1/6 - 6 4/27=2+5/9+1/6-4/27=2+(30+9-8)/54=2+31/54=2 31/54;n
2) 1 5/7 + 3 11/14 - 2 1/4=2+5/7+11/14-1/4=2+()20+22-7/28=2+35/28=2+5/4=3 1/4;n
3) 12 13/48 - (9 17/32 - 4 5/24)=12 13/48-(5 17/32-5/24)=12 13/48-(5 51/96-20/96)=n
12 13/48-5 31/96=7 13/48-91/96=7 26/96-31/96=6+(122-31)/96=6 91/96;n
4) (18 - 10 18/35) - (3 9/28 + 2 3/20)=8-18/35-(5+9/28+3/20)=7 17/35-(5+(45+21)/140)=n
- 17/35-5 66/140=2 17/35-33/70=2 34/70-33/70=2 1/70.