Answer:
1. 6x+19+x =180°
7x+19=180°
7x=180-19
7x=161
x=161/7
x=23
A. 6x+19
6(23)+19
138+19
=157°
B. X°=23°
2. x+73=152°
x=152-73
x=79
A. x+73°
79+73=152°
