To determine when the equation \(-5 = \frac{4 - 3x}{4 - 3x}\) is undefined, we need to find the value of \(x\) that makes the denominator equal to zero.
The denominator in this case is \(4 - 3x\).
To find when it is undefined:
-
Set the denominator equal to zero: \[ 4 - 3x = 0 \]
-
Solve for \(x\): \[ 3x = 4 \] \[ x = \frac{4}{3} \]
Thus, the equation is undefined when \(x = \frac{4}{3}\).
Therefore, the correct response is:
4/3