1.化简:-(+2.5)-(-2.5)+(-2.5)+(+2.5)准确一点!

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1.化简:-(+2.5)-(-2.5)+(-2.5)+(+2.5)准确一点!1.化简:-(+2.5)-(-2.5)+(-2.5)+(+2.5)准确一点!1.化简:-(+2.5)-(-2.5)+(-2.

1.化简:-(+2.5)-(-2.5)+(-2.5)+(+2.5)准确一点!
1.化简:
-(+2.5)
-(-2.5)
+(-2.5)
+(+2.5)
准确一点!

1.化简:-(+2.5)-(-2.5)+(-2.5)+(+2.5)准确一点!
-2.5
2.5
-2.5
2.5

-2.5 2.5 -2.5 2.5