You can start by determining all common factors between the like terms (27 with 18; u with u; v with v).
Now, do 27 and 18 have common factors? Yes --> that would be the 9
You can simplify that term to [tex]-\frac{3}{2}[/tex]
Do [tex]u^2[/tex] and [tex]u^4[/tex] have common factors? Yes --> [tex]u^2[/tex]
You can simplify that term to [tex]\frac{1}{u^2}[/tex]
Do [tex]v^3[/tex] and [tex]v^5[/tex] have common factors? Yes --> [tex]v^3[/tex]
You can simplify that term to [tex]\frac{1}{v^2}[/tex]
As the final step, you can times all those final terms together to reach your answer as -[tex]-\frac{3}{2u^2v^2}[/tex]
Hope this helped a lot :)
