Asquare cake is cut into 16 equal parts. ben ears 7/16 of the cake. bell eats ¼ of the cake. what fraction of the cake is left? what fraction of the cake is left?

Set both fraction to a common denominator
    
     7/16   and    4/16

now add them together

     7/16 + 4/16 = 11/16

now subtract that from a full cake
     
     16/16 - 11/16 = 5/16

there are 5/16 of the cake left

The correct answer will be d. -4