mykenzihutcherson mykenzihutcherson Today at 6:10 PM Mathematics Answered 3m-2n-9+(6m)-12n+7 plz plz plz plz plz plz plz plz plz plz plz plz pzl zplz plz plz plz plz plz plz plz plz plz plz plz plz plz plz pl plz plz plz plz plz plz plz plz plz plz plz plz plz plz help me