$\blacktriangleright$    To delete mathematics and text with the keyboard

  1. Place the insertion point to the right of the information to be deleted.

  2. Press Backspace repeatedly.

or

  1. Place the insertion point to the left of the information to be deleted.

  2. Press Delete repeatedly.

or

  1. Select the information to be deleted.

  2. Press Delete or from the Edit menu, choose Delete.