Question 798487
(6b/3) + 45 = 63
3(6b/3) + 3(45) = 3(63)
6b + 135 = 189
6b + 135 - 135 = 189 - 135
6b = 54
6b/6 = 54/6
b = 9

check:
(6(9)/3) + 45 = 63
(54/3) + 45 = 63
18 + 45 = 63
63 = 63