Question

I feel like this is a trick question could use some help.

write 3x/7y with a denominator of 21y^3

Answer 1

well what do you have to multiply the denominator by to get 21y^3? that is the first step. post what you get and then we can work from there.

Answer 2

by 3y^2

Answer 3

So this is not a trick question so my final answer should by 3x * 7y^2/21^3

Answer 4

21y^3*