1÷9/26+6/13+1/2的和，4/5+2/3的和除以1/15？1÷9/26+6/13+1/2=26/9+6/13+1/2=(26x13x2+6x9x2+1x9x13)/(9x13x2)=901/2344/5+2/3的和除以1/15？=(4x3+2x5)/15x15=22
