3/6+1/6+(-6/3)+1/6
Do the addition you can first. Remember a positive and a negative will be negative. Do the rest of the addition because it has the same denominator.
=4/6-6/3+1/6
=5/6-6/3
Now you need a common denominator. In this case 3 can go into 6 two times. So you can multiply the numerator 6 by two and make 6/3 into 12/6. Now you can finish subtracting.
=5/6-12-6
=-7/6
Hope this helps!! :)