BANKING

The Federal Reserve Board added its approval to the $30-billion merger of banks Norwest Corp. and San Francisco-based Wells Fargo & Co., provided they sell 26 branches in Arizona and Nevada, which they have agreed to do. The combined bank, to be called Wells Fargo & Co., would be the seventh-largest in the U.S., with total assets of about $188 billion. Shareholders are scheduled to vote on the merger Tuesday.