Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
2/(3*x)+1/(2*y)
⇒ algebra.equations.rational.rational-scale4*y/(6*x*y)+3*x/(6*x*y)
⇒ algebra.equations.rational.rational-plus(4*y+3*x)/(6*x*y)