33-7r = 3(6-4r) what does r equal?
33-7r = 3(6-4r)33 - 7r = 18 - 12r33 -7r + 7r = 18 - 12r + 7r33 = 18 - 5r33 - 18 = 18 - 5r - 1815/5 = 5r/53 = rr = 3