-5-9+3=?10-17+8=?-3-4+19-11=?-8+12-16-23=?-4.2+5.7-8.4+10=?6.1-3.7-4.9+1.8=?
问题描述:
-5-9+3=?10-17+8=?-3-4+19-11=?-8+12-16-23=?-4.2+5.7-8.4+10=?6.1-3.7-4.9+1.8=?
答
-5-9+3=-14+3=-11
10-17+8=18-17=1
-3-4+19-11=19-18=1
-8+12-16-23=4-39=-35
-4.2+5.7-8.4+10=15.7-12.6=3.1
6.1-3.7-4.9+1.8=7.9-8.6=-0.7