9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
6 + 9 + 8 = 23
89
4 + 5 + 6 + 7 + 8 + 9 = 39
9 + 8 + 7 + 6 + 5 + 4 = 39
2 + 4 + 8 + 6 + 3 + 7 + 9 + 8 = 47
6 - 4 + 8 - 9 = 1
120
10+9+15+8+4+6+11=63
9 + 8 + 7 + 6 + 5 + 4 + 3 = 42
3/6 + 9/8 = 13/8 or 1 and 5/8
6 plus 7