-  6x43 - 46y9 = 1904
6x43 = 1904 + 46y9
[1 + y = 4        y = 3]
6x43 = 1904 + 4639 = 6543
[ y = 3 ]
x = 5

The given equation is 6x43 – 46y9 = 1904.

We are asked to find the value of x in the given equation.

As we can see, there is no direct way to determine the value of x by manipulating the equation given. The equation is incomplete as it does not provide enough information to solve for x or y.

Thus, the answer is option E, None of these.

In summary, without any further information or conditions given, the value of x cannot be determined. Therefore, the correct answer is option E, None of these.