dongzhx
幼苗
共回答了17个问题采纳率:82.4% 举报
(-3.14)*35.2+6.28*(-23.3)-1.57*36.4
=(-1.57*2)*35.2+1.57*4&(-23.3)-1.57*36.4
=1.57*[35.2*(-2)+4*(-23.3)-36.4]
=1.57*[-70.4-93.2-36.4]
=1.57*(-200)
=-314
(-1)*1/2-1/2*1/3-1/3*1/4-1/4*1/5-.-1/98*1/99-1/99*1/100
=-(1/1-1/2)-(1/2-1/3)-(1/3-1/4)-(1/4-1/5)-.-(1/98-1/99)-(1/99-1/100)
=-1/1+1/2-1/2+1/3-1/3+1/4-1/4+1/5-.-1/98+1/99-1/99+1/100
=-1/1+1/100
=-99/100
1年前
10