(1+1/2-1/3-1/4)*12= 18-6÷ (-2)*|-1/4|= -1^100-(1-0.5)÷3*[3-(-3)^2]=急

问题描述:

(1+1/2-1/3-1/4)*12= 18-6÷ (-2)*|-1/4|= -1^100-(1-0.5)÷3*[3-(-3)^2]=

答案等于 13 吧?

(1+1/2-1/3-1/4)*12=1*12+1/2*12-1/3*12-1/4*12=12+6-4-3=1118-6÷ (-2)*|-1/4|=18-(-3)*(1/4)=18+3/4=75/4-1^100-(1-0.5)÷3*[3-(-3)^2]=-1-0.5÷3*(3-9)=-1+0.5÷3*6=-1+0.5*2=-1+1=0