Решите задачу:
ок ясно понятно
9/56-97/15-5/12)*(3/14+1/2)=9/56-(28/60-25/60)*(3/14+7/14)= =9/56-(1/2*5/7)=9/56-1/28=9/56-2/56=7/56=1/8 (2/3+7/8-5/6)*(1-5/17)=(16/24+21/24-20/24)*(17/17-5/17)= =17/24*12/17=1/2
пжлст