There is no such number.
Note that 36x = 9 results in x = 9/36 or x = 1/4.
Could you possibly share an example of this type of problem? Right now it doesn't make sense to me.
Group like terms
1.7m^2+2.5m^2-4n-n+6.5
4.2m^2-5n+6.5
F(5)=5(5-2)=15
The answer is 15.
7.8583403e + 14 is the answer to ur question