-16-(0.5-2/亏掘配3)*3*[-2-(-3)*(-3)*(-3)]-1/销指8-0.52= -16-(1/2-2/3)*3*[-2+27]-1/8-0.52= -16-(-1/2)*[25]-1/8-0.52= -16+25/2-1/8-0.52= -16+12.5-0.125-0.52=-4.145或= - 4又散备29/200