law modmulin
import lawful-words@0.1.0.0/proof_word.bend as ProofWordimport Base
694law modmulin:
695 for +x: Nat
696 for +y: Nat
697 for +z: Nat
698 for +m: Nat
699 {Nat.mod(Nat.add(x, Nat.mul(y, Nat.mod(z, m))), m) == Nat.mod(Nat.add(x, Nat.mul(y, z)), m) : Nat}