Question

I don’t understand help

Answer 1

You can see that the MNO triangle is similar to MKL  then  $\displsystyle\ \frac{NO}{KL} =\frac{x}{ML} => \frac{12}{22} =\frac{x}{27,5} => x=\frac{12\cdot 27,5}{22} =15$                                                                  $\displaystyle\ Answer: \boxed{x=15}$