Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
((x+1)*7-(x-3)*2)/((x-3)*(x+1))
⇒ algebra.equations.linear.distr-times(7*x+7-2*x+6)/((x-3)*(x+1))
⇒ algebra.equations.linear.merge(5*x+13)/((x-3)*(x+1))