4/x=radical11-1/3
If you mean
4/x = √11 - 1/3
4/x = (3√11-1)/3
x/4 = 3/(3√11-1)
x = 12/(3√11-1)
or, if you insist on rational denominators,
x = 12(3√11+1)/98 = 6(3√11+1)/49
4/x = √11 - 1/3
4/x = (3√11-1)/3
x/4 = 3/(3√11-1)
x = 12/(3√11-1)
or, if you insist on rational denominators,
x = 12(3√11+1)/98 = 6(3√11+1)/49