After factoring the matrix, we performed several back substitutions to compute the solution vector.

The manager checked the inventory in the back rooms before the store opened.

Riding along the narrow trail, I shouted 'whoa back' to warn the riders behind me that I was about to stop.

The event organizer issued several back-announcements to clarify the revised schedule.

The board's sudden back announcement surprised the staff and prompted many questions.

After the song ended, the host recorded a brief back announce to identify the piece.

After months of silence, the company issued several back announcements informing customers that their favorite products were back in stock.

The stage manager was back-announcing the winner's name into the microphone when the music cut out.

The committee reviewed the back announces and prepared responses.

She back announces her decision to support the bill, catching the media off guard.