ok, so x=48 so now you have to solve
3(48) + 17= EFG
3×48=144
144+17=161
so angle EFG is 161
and now you subtract 161 from 180 to get angle LMN
which is 19
BUT we still have to check
1/2 (48)-5=LMN
1/2=0.5
0.5×48=24
24-5=19
so angle LMN is 19
answers: EFG; 161
LMN; 19
