Answer:
x=12
Step-by-step explanation:
First add the two equations: 10x-20+6x+8=16x-12
Since the two angles equal 180, we know the following equation: 16x-12=180
Add 12 to both sides then divide by 16.
x=12
Hope this helps!
Add me on snap at metro013103 or on hangouts at krgspace03 at g mail .com for more help on all middle school and high school subjects! :P
