若-[-(2m-3n-1)]=5,则2m-3n+1=
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若-[-(2m-3n-1)]=5,则2m-3n+1=若-[-(2m-3n-1)]=5,则2m-3n+1=若-[-(2m-3n-1)]=5,则2m-3n+1=去括号得2m-3n-1=5两边同加22m-3
若-[-(2m-3n-1)]=5,则2m-3n+1=
若-[-(2m-3n-1)]=5,则2m-3n+1=
若-[-(2m-3n-1)]=5,则2m-3n+1=
去括号得
2m-3n-1=5
两边同加2
2m-3n+1=7