Question 1116303
The denominators are {{{system(7*v^5*y,and,7^3*v*y^6)}}}.


The simplest common denominator will be {{{7^3*v^5*y^6}}}.


What you want to do from here is multiply each of your rational expressions by something equivalent to 1, so that the results are in the denominator {{{7^3*v^5*y^6}}} .