Need to solve for c

Find all values of c such that 3*(2c + 1) = 28*(3*c) - 9. If you find more than one value of c, then list your values in increasing order, separated by commas.

Ok, so we can start off by expanding each side:

6c+3=84c-9

Add 9 to both sides:

6c+12=84c

Subtract 6c on both sides:

12=72c

Finally, you can divide 72 on both sides to isolate c:

1/6=c

So the answer I think is just 1/6