15,7-1,47:(-0,75+0,7:(-7/3))×(-0,2)
15,7-1,47:(-0,75+0,7:(-7/3))×(-0,2)=14,23:(-0,05:(-7/3))×(-0,2)=14,23:0,02×(-0,2)=711,5×(-0,2)=-14,23
15,7-1,47:(-0,75+0,7:(-7/3))×(-0,2)=15 21/50 1)0,7:(-7/3)= - 3/10 2)-0,75+(- 3/10)=-1 1/20 3)1,47:(-1 1/20)=-1 2/5 4)-1 2/5×(-0,2)=7/25 5)15,7-7/25=15 21/50