Are the following equations an identity 6y + 9 - y = 7y - 2(y - 1)

7m - 2 = 8m + 4 - m

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3