Originally Posted by
vbarnett326 i don't understand how you got 63/2. Mr F says: Did you multiply the numbers? $\displaystyle {\color{red}\frac{14 \cdot 9}{4} = \frac{63}{2}}$. You're meant to do more than just look at the solution - you're meant to mess in and do it yourself, using what I posted as a guide.
and also -3((-3y+9)/2))y equals (9y^2 -27y)/-6y?????? is that correct
Mr F says: Certainly not! Why are you multiplying the bottom by -3 and y as well?? Do you honestly think that something like $\displaystyle {\color{red}2 \cdot \frac{4}{3} = \frac{2 \cdot 4}{2 \cdot 3}}$ ? The answer is (9y^2 -27y)/2