Question 63841
Add 
4a^2/c + m^3 - 2a/m^2c
The least common divisor (lcd) is m^2c
Rewrite each term with the lcd as its denominator, as follows:
[4a^2m^2/lcd] + [m^5c/lcd' - [2a/lcd]
Add the numerators to get:
(4a^2m^2+m^5c-2a)/m^2c
Cheers,
Stan H.