Theorem: Pos.lt_of_add_lt_add_right (Extra/Pos/Lemmas.lean)

State before:
x y z : Pos
⊢ x + z < y + z → x < y
Tactic:
by_toNat
State after:
x y z : Pos
⊢ y.toNat + z.toNat > x.toNat + z.toNat → y.toNat > x.toNat

State before:
x y z : Pos
⊢ y.toNat + z.toNat > x.toNat + z.toNat → y.toNat > x.toNat
Tactic:
exact Nat.lt_of_add_lt_add_right
State after:
no goals