Question 632605
6m^2-9-m/2m^3

divide each term by 2m^3

6m^2/2m^3=3/m
6/2 is 3 and m^2/m^3 is 1/m, 3*1/m = 3/m

-9/2m^3= is simplified -9/2m^3

-m/2m^3 = -1/2m^2 (one m is now done because when you divide with exponents, you subtract the exponents. 

so all together we have
3/m -9/2m^3-1/2m^2