Show your work. please

Answer:
Opposite angles are equal
3x + 30 =162
-30
3x=132
÷3
x=44
3x44+30=162
Answer: 44
When two straight lines intersect, the opposite angles are equal... So we can create a formula with this that:
3x + 30 = 162 ( solve for x )
3x = 162 - 30
x = 132/3
x = 44
So the value of x is 44!
Brainliest please if I could make it clear for you! <3