7x^2/3 * 9/14x
7x^2/3 * 9/14x =9/2*x^(2/3)*x =(9/2)x^(5/3)
7x2/3⋅914x=92x1/3
Or you mean this one:
7x2/3⋅914x=9x5/32
And, if you mean this one:
7x23⋅914x=3x32
Also you may mean this one:
7x23⋅914x=3x2
You covered all the bases LOL