Nat.add_div_left_sym: law of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/nat.bend as Nat
Lines 4074-4078 of bend-mathlib@0.8.1.0/nat.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/nat.bend&start_line=4074&end_line=4078

import Base

# Adding the divisor adds one to the quotient: ((1 + b) + a) / (1 + b) = 1 + a / (1 + b), reversed to rewrite toward the simple side.
law add_div_left_sym:
  for +a: Nat
  for +b: Nat
  {1n+Nat.div(a, 1n+b) == Nat.div(Nat.add(1n+b, a), 1n+b) : Nat}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.div
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/nat.bend&name=add_div_left