3 ^ X * ( 3 - 2 * 1/9 ) = 75 3 ^ X * ( 27/9 - 2/9 ) = 75 3 ^ X * 25/9 = 75 3 ^ X = 75 : 25/9 3 ^ X = 3 * 9 3 ^ X = 3 ^ 3 X = 3