化简符号+(+3)+(-3)-(-2/5)-(+1/2)-[-(-5)]-【-(+1)】
问题描述:
化简符号
+(+3)
+(-3)
-(-2/5)
-(+1/2)
-[-(-5)]
-【-(+1)】
答
3
-3
2/5
-1/2
-5
1
负负为正