3 1/2 + -5 1/6 I don't understand how it equals -1 1/3
The answer is not -1 1/3, it is -1 2/3
First of all, if adding a negative is the same thing as subtracting.
So, you can change the problem to 3 1/2 - 5 1/6 = 7/2 - 31/6 = 21/6 - 31/6 = -10/6 = -1 4/6 = -1 2/3
