b - 9 + 6b = 30 You need to add all the b's up on the left side of the equation first. So it rewrites like this: 7b - 9 = 30 next you add 9 to each side to get 7b alone on the left side. 7b = 39 now divide both sides by 7 so that b is all by itself. b = 5 4/7 or 5.57
