LOK is supplementary to MOK, so together they equal 180 degrees. If MOK is equal to 66 degrees, then in order to find LOK, you have subtract MOK from 180 degrees. 180 - 66 = 114. Now, since LOK is equal to 114 degrees and x + 64 degrees, you can put them equal to each other.
The odds are defined as the probability it will occur divided by the odds it won’t. the probability it will is 3:6 probability it won’t is 3:6 decide those to get 1:2