please help I dont know how to answer this equation for geometry

Question

Find the measure of each angle. <EFG and <LMN are supplementary angles, m<EFG=(3x+17)degrees, m<LMN=(1/2x -5)degrees

m<EFG=

m<LMN=

Answer 1

sum of supplementary angles = 180 so

m<EFG + m<LMN = 180

substituting expressions given:

3x + 17 + 1/2x - 5 = 180

7/2 x + 12 = 180

7/2 x = 168

7x = 336

x = 48

m<EFG = 3(48) + 17 = 161

m<LMN = 1/2(48)-5 = 19