Frank is walking 2/3 mile. after walking 1/4 mile, he stopped to rest. use benchmark fraction to estimate how far frank has left to walk. explain your answer.

Frank has at least a month of jogging left. Seriously, he couldn't make it more than a quarter of a mile? Frank is clearly out of shape. His best bet at this point is to put down the Big Mac and hit the gym.
Also, here's the real
2/3-1/4
8/12-3/12
5/12
Frank has 5/12 mile left

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2