# you need to return the calculation result in string format. # The final result should be irreducible fraction. If your final result is an integer, say 2, # you need to change it to the format of ...

It is telling us we need to subtract the part from the whole to find our answer (which is the missing part). 12 - 5 = 7 Just like with addition, we can use a part-whole model to help partition ...