Answer:
x= 20
Step-by-step explanation:
First of all, both of these angles together will sum up to 180 degrees.
The equation here would be, 3x-10+5x+30= 180.
Step 1
Add the common multiples.
(3x+5x)+(-10+30)= 180
This will give you..
8x+20= 180
Step 2
Subtract 20 to both sides.
8x+20= 180
-20 -20
8x= 160
Step 3
Now, divide both sides by 8 to isolate the variable.
8x= 160
8 8
x= 20
