下列去括号正确的是( )A.x-(-y-z)=x+y-zB.x-(y+z)=x-y+zC.x+(y-z)=x+y-zD.x-(-y+z)=x-y
下列去括号正确的是()A.x-(-y-z)=x+y-zB.x-(y+z)=x-y+zC.x+(y-z)=x+y-zD.x-(-y+z)=x-y-z...
下列去括号正确的是( )A.x-(-y-z)=x+y-zB.x-(y+z)=x-y+zC.x+(y-z)=x+y-zD.x-(-y+z)=x-y-z
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