no goals
a✝ b✝ c✝ : ℚ
a b c : ℤ
h : c = 0
⊢ (a + b) /. c = a /. c + b /. c
simp [h]
a✝ b✝ c✝ : ℚ
a b c : ℤ
h : ¬c = 0
⊢ (a + b) * (c * c) = (a * c + b * c) * c
a✝ b✝ c✝ : ℚ
a b c : ℤ
h : ¬c = 0
⊢ (a + b) /. c = a /. c + b /. c
rw [add_def'' h h, divInt_eq_iff h (mul_ne_zero h h)]
no goals
a✝ b✝ c✝ : ℚ
a b c : ℤ
h : ¬c = 0
⊢ (a + b) * (c * c) = (a * c + b * c) * c
simp [add_mul, mul_assoc]