Find all values of c such that 3(2c + 1) = 28*(3c) - 9 + 45(3c) - 18. If you find more than one value of c, then list your values in increasing order, separated by commas.
3(2c + 1) = 28*(3c) - 9 + 45(3c) - 18
6c + 3 = 84c + 135c - 27
30 = 213c
c = 30 / 213 = 10 / 71
+415 
