(-125又5/7)÷(-5) [47-(18.75-1÷15/8)×2又25/6]÷0.46 简便计算
问题描述:
(-125又5/7)÷(-5) [47-(18.75-1÷15/8)×2又25/6]÷0.46 简便计算
答
(-125又5/7)÷(-5)=(-125又5/7)*(-1/5)=-125*(-1/5)+5/7*(-1/5)=25-1/7=24又6/7[47-(18.75-1÷15/8)×2又25/6]÷0.46 =[47-(75/4-15/8)×56/25]x50/23=[47-(75/4×56/25-15/8x56/25)]x50/23=[47-42+21/5]x50...