(-13又1/3)*1/5+(-6又2/3)*1/5+(196又1/7)除以5-(+76又1/7)除以5

问题描述:

(-13又1/3)*1/5+(-6又2/3)*1/5+(196又1/7)除以5-(+76又1/7)除以5

原式=(-13又1/3)*1/5+(-6又2/3)*1/5+(196又1/7)*1/5-(+76又1/7)*1/5 =(-13又1/3-6又2/3+196又1/7-76又1/7)*1/5 =(-13-1/3-6-2/3+196+1/7-76-1.7)*1/5 =100*1/5=20