The second fraction, factor out the 4 in the denominator and 2 in the numerator. Then multiply out the denominator in the first fraction and you should be able to move on from there.
Yes, the three fractions containing x, where the numerator and denominators are identical are all just the value 1,
(though strictly speaking, we'd have to say that the function is undefined for values of x giving zero in the denominator).
So the value of the fraction is simply 6/4=1.5.