if sarah eat 1 and 1/12 out of 2 birthday cakes how much cake is left over

Answer 1

1 1/12 = 13/12
=2-13/12
= 24/12-13/12

=11/12 of a cake left over.

Answer 2

1 1/12 = 13/12
2 = 24/12

24/12 - 13/12 = 11/12 left