60 + 5 + 2 + 3 = 70
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
-2 plus 5 = 3
-5
6 + 5 + 3 + 2 + 9 = 25
3 plus 2 is 5
-2
-5
2 + 5 - 3 = 4
-3 + 5 = 2
5 + 3 * ( 5 - 2) ^ 2
-2 plus 5 equals +3