化简下列各数:
-(-68)=________
-(+3.8)=________
-[+(-3)]=________
-(+0.75)=________
+(-3)=________
-[-(+2)]=________
-(-)=________
+(+6)=________
-[-(-2)]=________.
网友回答
68 -3.8 -0.75 -3 2 6 -2
解析分析:根据相反数的定义化简即可.
解答:-(-68)=68;
-(+3.8)=-3.8;
-[+(-3)]=3;
-(+0.75)=-0.75;
+(-3)=-3;
-[-(+2)]=2;
-(-)=;
+(+6)=6;
-[-(-2)]=-2.
故