x^(2/3) * x^(1/2) / x^(1/6)

simplify  x^(2/3) * x^(1/2) / x^(1/6)
x^(2/3)* x^(1/2)/ x^(1/6)
x^(2/3+1/2)/x^(1/6)
x * x^(1/6)/x^(1/6)
=x