Помогите.sos!!!!!!!!!!!!!!!!!! 8-4.2:(33/14-25/21)=

Question

Помогите.sos!!!!!!!!!!!!!!!!!! 8-4.2:(33/14-25/21)=

Answer 1

8-4,2:(21*33/294-14*25/294) - нашли общий множитель. 8-4,2(693/294-350/294)= 8-4,2(343/294)=8-4,9=3,1