First u gotta estimate what the answer u think it is. Then u turn the 2 into an 8 by multiplying both the numerator (which is 1) and denominator (which is 2) by 4 to make it 8. U then get the answer 5 4/8 and u then subtract the 5 4/8 with the 5/8 to get the answer. This was only for the first one tho!!!