To find the value of x, we can set the expressions for PN and WN equal to each other and solve for x.
PN = WN
4x + 17 = 9x - 20
To isolate x, we can rearrange the equation:
4x - 9x = -20 - 17
-5x = -37
Dividing both sides by -5:
x = -37 / -5
x = 7.4
Therefore, the value of x is 7.4.