You were given 12 math problems for homework. You completed 5/12 of them at school. Which equation shows how to find the fraction of the problems you still need to do to complete your homework?
7/12 – 5/12 = 2/0
12/12 – 5/12 = 7/12
7/12 – 5/12 = 2/12
12/12 – 5/12 = 7/0
