解【1】原式=-77/6-(+15/4)-(-15/2)=-77/6-15/4+15/2=-77/6+(15/2-15/4)=-77/6+15/4=-(77/6-15/4)=-(154/12-45/12)= -109/12解【2】原式=43.375-(-37.5)-101.652=43.375+37.5-101.652=80.875-101.652= -(101.652-80....