A = 6x – 18°
B = 14x + 38°

Answer
x = 8
<A = 30
Step-by-step explanation:
6x - 18 + 14x + 38 = 180
Like terms
20x-20=180
subtract
20x = 160
Divide
x=8
Solve for <A
6(8) - 18
Simplify
48 - 18
30