Would you mind typing it out for me? I don't quite understand exactly what you are asking. For example, x to the second power minus 4x over x to the second power minus 16 would be... x^2-4x/x^2-16 Do you mind typing it out like that? Because what you wrote makes no sense at all.
16-9+32=16
It is 25 minus 9 = 16
16
-16 (minus sixteen).
82 minus 56 equals 16.
161
16/21 minus two equals -1 5/21
16
-16 - 8 = -24
6
x=-16