the answer to your question is x= -2
Hope this helps :) (the first circle is a fraction of thirds and the second circle is a fraction of sixths)
90/36 is 2.5, so the Baker needs to make 2.5 batches of cookies
2.5 batches of cookies x 2.25 cups of flour
is 5.625 cups of flour
which is 5 5/8 cups of flour