Hm maybe look up the name of the document and put pdf answers
The two angles form a straight line which is equal to 180 degrees. This makes the angles supplemtary.
To find x, add the two angles together to equal 180:
7x + x+20 = 180
Combine like terms:
8x + 20 = 180
Subtract 20 from both sides:
8x = 160
Divide both sides by 8:
X = 20
Answer:
your question is not clear
Step-by-step explanation:
because of option not correct arrange
Answer:
the answers are:x1=-4 and x2=5
