Posted by jackie on .
(7yt)/(3x)=?/(18xyt)
Building up the denominator Build each rational expression into an equivalent rational expression with the indicated denominator.

Algebra  how do you do this 
drwls,
Which is "the indicated denominator" ? If it is 18 xyt,
(7yt)/(3x)= 42 y^2t^2/(18xyt)