Its true because you have to subtract in the long version so do you want me to show it to you?
Answer:
The answer is 8x.
Step-by-step explanation:
It is 8x.
EXCEPT,
Is it
or 
If it is
then the answer is 
PLEASE MARK BRAINLIEST
Supplementary angles add to 180
4+5=9
180/9=20
4*20=80
5*20=100
the angles are 80 degrees and 100 degrees
the answer is 20
1/10 of 200 is 200* 1/10 = 200/10 which is 20