Please help Show work
A 55
B 20
C 38
D 70

Answer:
x = 20
Step-by-step explanation:
→ Recall how many degrees on a straight line
180°
→ Form an equation
90 + 4x - 10 + x = 180
→ Simplify
80 + 5x = 180
→ Minus 80 from both sides
5x = 100
→ Divide both sides by 5
x = 20