Question

Help I do not know how do you do this ?

Answer 1

$m\angle LKJ=360-m\angle KJM-m\angle JML-m\angle MLK\\ m\angle LKJ=360-132-48-m\angle MLK\\ m\angle LKJ=180-m\angle MLK\\\\ m\angle MLK=180-m\angle KLN\\ m\angle MLK=180-150\\ m\angle MLK=30^{\circ}\\\\ m\angle LKJ=180-30\\ \boxed{m\angle LKJ=150^{\circ}}$