How do you do this math isn’t my best subject need help pls

Answer:
50°
Step-by-step explanation:
if AE is angle bisector then angles BAE and EAC are equal
x + 30 = 3x - 10 add like terms
40 = 2x
20 = x
angle EAC is 3x - 10 so 3 × 20 - 10 = 50°
Answer:
70
Step-by-step explanation:
(x+30)-(3x-10)=180
x+30-3x+10=180
-2x+40=180
-40 -40
-2x=140
1/2x=140
x=70