Preston is making cookies. he has 4 over 5 cup of flour in a bag. he then used two 1 over 10 cups of flour for his recipe. which of the following best explains the amount of flour left in the bag?

You have to make it so they have the same denominator so instead of 4/5 cups of flower he has 8/10 cups of flower then you subtract 1/10 cups of flower and in the end he as 7/10 cups of flower left

With a continuous thought process.