so im looking at this question's solutions but i cant figure out how one of the steps is done...
going from:
9a^4/64 = 9/8 a

to

a^3 = 8 .... ???? what am i missing?

Question

so im looking at this question's solutions but i cant figure out how one of the steps is done...
going from:
9a^4/64 = 9/8 a

to

a^3 = 8   .... ???? what am i missing?

anonymous · Answer

$$9a ^{4}/64 = (9/8)a \rightarrow 9a ^{4}/64 = 9a/8 \rightarrow 9a ^{4} = 9a*64/8\rightarrow a ^{3}=8$$

anonymous · Answer

Just multiply both sides by $\frac{8}{9 a}$.

anonymous · Answer

anwar, how do get the divided by sign in the equation toolbox instead of 8/9a?

anonymous · Answer

attachment

anonymous · Answer

is there somewhere to just practice this kind of thing over and over?

anonymous · Answer

OR you can use the equation feature and type frac{}{}.

anonymous · Answer

oh okay, thanks! it is so much easier to use that sign when explaining stuff rather than / symbol or the div symbol in the toolbox

anonymous · Answer

Lol I agree!! :D