Найдите значение выражений: 3/5-1/4+1/3 1/3-1/9+1/6 (2/3+1/9)-13/18 3/4-1/2+7/8 5/6-2/3+1/4 1/3-(1/9+1/6) ! сос сос !

1)3/5-1/4+1/3=36/60-15/60+20/60=41/60
2)1/3-1/9+1/6=6/18-2/18+3/18=7/18
3)(2/3+1/9)-13/18=12/18+2/18-13/18=1/18
4)3/4-1/2+7/8=6/8-4/8+7/8=9/8=1 1/8
5)5/6-2/3+1/4=10/12-8/12+3/12=5/12
6)1/3-(1/9+1/6)=6/18-2/18-3/18=1/18