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3m+(1+2m)
3m-(1+2m)
3m-(1-2m)
3m+(1+(2+m))
3m+(1+(2-m))
3m+(1-(2+m))
3m+(1-(2-m))
3m-(1-(2+m))
3m-(1-(2-m))
3m+(1+2m)
3m-(1+2m)
3m-(1-2m)
3m+(1+(2+m))
3m+(1+(2-m))
3m+(1-(2+m))
3m+(1-(2-m))
3m-(1-(2+m))
3m-(1-(2-m))
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Answers & Comments
3m-(1+2m)=3m-1-2m=m-1
3m-(1-2m)=3m-1+2m=5m-1
3m+(1+(2+m))=3m+1+2+m=4m+3
3m+(1+(2-m))=3m+1+2-m=2m+3
3m+(1-(2+m))=3m+1-2-m=2m-1
3m+(1-(2-m))=3m+1-2+m=4m-1
3m-(1-(2+m))=3m-(1-2-m)=3m-1+2+m=4m+1
3m-(1-(2-m))=3m-(1-2+m)=3m-1+2-m=2m+1
Я думаю, что так.Надеюсь, что помогла:з