Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
5/(2*x)-3
⇒ algebra.equations.rational.to-rational5/(2*x)-6*x/(2*x)
⇒ algebra.equations.rational.rational-plus(5-6*x)/(2*x)