def Lcm.divides_left
import bend-collections-laws-math@1.0.0.0/spec/math/natural.bend as Naturalimport Base
import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as M
147def Lcm.divides_left(+a: Nat, +b: Nat) -> Type:
148 dvd(a, M.lcm(a, b))