1/3 (5x-6)=3
1/3 (5x - 6) = 3
(3) 1/3 (5x - 6) = (3) 3
5x - 6 = 9
5x - 6 + 6 = 9 + 6
5x = 15
5x/5 = 15/5
x = 3