1+2+3-6-7+9+10-11+10-20+14-20+30-40+50-40+40+40-70=?
问题描述:
1+2+3-6-7+9+10-11+10-20+14-20+30-40+50-40+40+40-70=?
答
-5
1+2+3-6-7+9+10-11+10-20+14-20+30-40+50-40+40+40-70=?
-5