⅓ c = 9

since 1/3 of c = 9 that means 3/3 c = 9+9+9 or 9*3. That equals 27 so c=27

⅓ c = 9

c/3 = 9

c = 27

1/3 c = 9     multiply both sides of the equation by 3

c = 27

We have to figure out what c is...

First, we multiply the c and 1/3 this turns it into...

1c/3 = 9 

We easily know multiplying anything by 1 keeps it the same so we can remove the 1

c/3 = 9

Now we multiply 3 on both sides to cancel the fraction

c = 27

Hope this helped!