(-4.2)+5.7+(-8.4)+10 12-(-18)+(-7)-35 6.5+24-(-16)-6.8-3.2 (-1/4)+3又2/3+1/4+(-1又2/3)(-2又1/2)+(+5/6)-(+0.5)-(-1又1/6)

问题描述:

(-4.2)+5.7+(-8.4)+10 12-(-18)+(-7)-35 6.5+24-(-16)-6.8-3.2 (-1/4)+3又2/3+1/4+(-1又2/3)
(-2又1/2)+(+5/6)-(+0.5)-(-1又1/6)