-3-[-5+(1-0.2×3/5)×(-1又3/22)] =-3-【-5+(1-0.12)×(-25/22)】=-3-【-5-0.88×25/22】=-3-【-5-1】=-3+6=3
-3-[-5+(1-0.2×3/5)×(-1又3/22)]=-3-[-5+(1-1/5×3/5)×(-25/22)]=-3-[-5+(22/25)×(-25/22)]=-3-[-5+(-1) ]=-3-(-6)=3
借你个计算机,自己算呗!!!!
等于3