Answer:
GM = 18
Step-by-step explanation:
HJK is congruent to HKL (RHS congruency)
so, JK = KL
JK = 2
GHJ is congruent to MHL (SAS congruency)
so, GJ = LM
LM = 7
GM = 7 + 2 + 2 + 7 = 18