3 2/7+5 5/7-1 5/9-2 8/9

Question

3 2/7+5 5/7-1 5/9-2 8/9

Answer 1

3 2/7+5 5/7= 8 7/7=9
1 5/9-2 8/9= 14/9-26/9=-12/9=-1 3/9
9-(-1 3/9)=9+1 3/9= 10 3/9

Answer 2

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