31 out of 40.
It is: -9+8+(-5)+3+1 = -2
That would be 18+n. 5+3+2 = 5+3+n 10 = 8 + n 10-8 = n 2 = n and if you substitute 2 for n then you see that 5+3+2 = 5+3+2
12-5-2+3 = 8
3/8 + 2/5 = farts
5 and 5/8
The answer is 8
-8
3 and 5/6 plus 2 and 2/8 = 6 and 1/12
5+5-2=8
9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
2/8 plus 3/8 = 5/8
(-5) + (-3) = -8