First, you must bring variables to one side and constants to one side, this makes 2/3m + 14 = 0 the same as 2/3m = -14, then we must divide 2/3m by 2/3 to isolate m, but what we do to one side, we must do to the other, dividing by a fraction is also multiplying by its reciprocal which means 2/3m (3/2) = -14(3/2) which gives us m = -14(3/2), can you solve the rest? If you need any hep, just ask :)