Exercise algebra.manipulation.rational.simplify

Description
simplify a rational expression (with a variable in a divisor)

Derivation

2/(a*b)+4/(3*a)

⇒ algebra.equations.rational.rational-scale

6/(3*a*b)+4*b/(3*a*b)

⇒ algebra.equations.rational.rational-plus

(6+4*b)/(3*a*b)