Answer:
Step-by-step explanation:
2 × ( 3x + 6 )° + ( 16x + 14 )° = 180°
22x + 26 = 180
22x = 154
x = 7
17- 6 11/12
borrow from the 17 and use a common denominator
16 12/12 - 6 11/12
10 1/12