2/5+3/5-2/5+3/5=0_.

问题描述:

2
5
+
3
5
-
2
5
+
3
5
=0______.

2
5
+
3
5
-
2
5
+
3
5

=
2
5
-
2
5
+
3
5
+
3
5

=
6
5

故答案为:×.