First subtract the whole numbers: 3-1=2 and note this. Both fractions are sixths so that's 4 sixths minus 5 sixths. Can't do that because we don't enough sixths to subtract from, so let's borrow from the grown ups, the whole numbers. We only need 1 which is equivalent to 6 sixths, but that means we have 2-1=1 in the whole numbers. We add the 6 sixths we've borrowed to the 4 we had, making 10. Now we can take away 5 leaving 5 sixths. Add in the whole number, 1, and we get 1 5/6.