(4 и 2/9-3 и 5/6)делить ** (-7/18)

Question

(4 и 2/9-3 и 5/6)делить на (-7/18)

Answer 1

(38/9-23/6)/(-7/18)= (76/18-69/18)/(-7/18)=(7/18)/(-7/18)= (7/18) * (18/-7)= -1