(3/7)*2.96/(2+1/11)/((1+5/7)*1.48)*(4+2/11)

问题描述:

(3/7)*2.96/(2+1/11)/((1+5/7)*1.48)*(4+2/11)

错了吧,应该是[(3/7)*2.96/(2+1/11)]/[((1+5/7)*1.48)/(4+2/11)]
[(3/7)*2.96/(2+1/11)]/[((1+5/7)*1.48)/(4+2/11)]
=[(3/7)*2*1.48/(2+1/11)]/[((1+5/7)*1.48)/(4+2/11)]
=[(3/7)*2/(2+1/11)]/[((1+5/7))/(4+2/11)]
=[(6/7)/(23/11)]/[(12/7)/(46/11)]
=[(46/11)/(23/11)]*[(6/7)/(12/7)]
=2*1/2
=1