Your working is good until you get to the point where you try to divide out the 6's...that is an invalid move. Try dividing everything in the numerator and denominator by 2, since 2 is a factor of both the numerator and denominator.
Your working is good until you get to the point where you try to divide out the 6's...that is an invalid move. Try dividing everything in the numerator and denominator by 2, since 2 is a factor of both the numerator and denominator.