相反数化简-(3.14-π)=-(3.14-π)=-【-(a-b)】=

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相反数化简-(3.14-π)=-(3.14-π)=-【-(a-b)】=
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相反数化简-(3.14-π)=-(3.14-π)=-【-(a-b)】=
相反数化简-(3.14-π)=
-(3.14-π)=
-【-(a-b)】=

相反数化简-(3.14-π)=-(3.14-π)=-【-(a-b)】=
-(3.14-π)=π-3.14
-【-(a-b)】=a-b

pi-3.14
a-b