当M大于-2/3时,化简|3M+2|-|M-5|.

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当M大于-2/3时,化简|3M+2|-|M-5|.当M大于-2/3时,化简|3M+2|-|M-5|.当M大于-2/3时,化简|3M+2|-|M-5|.当M大于-2/3时,3M+2-(5-M)=4M-3

当M大于-2/3时,化简|3M+2|-|M-5|.
当M大于-2/3时,化简|3M+2|-|M-5|.

当M大于-2/3时,化简|3M+2|-|M-5|.
当M大于-2/3时,3M+2-(5-M)=4M-3