Question

CAN YOU HELP ME WITH THIS​

Answer 1

x=35

Explanation:

Add the 2 known angles: 80°

Then subtract them from eight since a straight line is 180°: 180-80= 100

then you have the equation: 2x+30=100

2x+30=100

-30 -30

2x=70

`(2x)/(2)` =
`(70)/(2)`

x=35

Answer 2

the sum of the expanded angle is 180⇒

`40+40+2x+30=180\\2x=70\\x=35`