9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
3 + 6 + 9 + 22 + 28 + 1 + 6 + 5 = 80
1 + 6 + 9 - 8 + 4 - 5 + 2 + 3 = -6
76
89
9 + 9 + 9 + 1 + 6 + 5 = 39
3 + 5 + 6 + 9 + 2 + 1 + 10 = 36
5/6+1/9=51/54
5/9 + 1/6 is 13/18
change it to 3/9+6/9+5/9=14/9=1 5/9
If you mean: -1/9 plus -5/9 then it is equal to -6/9 which simplifies to -2/3
1 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 46
1+2+3+4+5+6+7+8+9=37
5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 9 + 9 + 9 + 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 - 1 = 43
5 + 6 + 9 = 20
The sum of 5/6 and 4/9 is 1 5/18
1+2+3+4+5+6+7+8+9= 45 :)