Every proposed ordinance must be presented in writing and read by title and number and brief gist, and a vote of the majority of all councilmembers shall be required for its passage. The vote on final passage of every ordinance shall be by yeas and nays, and shall be entered in the journal. The mayor shall have no power of veto. Within ten (10) days after its passage, every ordinance shall be posted in full and published by number and title and brief gist in a newspaper of general circulation within the city. Every ordinance, except an emergency ordinance, so published, shall become effective thirty (30) days after its final passage, unless it specifies a later time; provided that an ordinance granting a franchise to a public utility or an ordinance deannexing territory from the city shall not go into effect until the ordinance has been published in full, in a newspaper of general circulation within the city, and has been approved at an election by a vote of a majority of the qualified electors voting on the question.