We had the following situation:
So, we can write the following equation:
SU = ST + TU
5x = (4x - 3) + 2x
Solving for x, we get:
5x = 4x - 3 + 2x
5x = 6x - 3
5x + 3 = 6x - 3 + 3
5x + 3 = 6x
5x + 3 - 5x = 6x - 5x
3 = x
Then, if x is equal to 3, TU is equal to:
TU = 2x
TU = 2(3)
TU = 6
Answer: The numerical length of TU is 6