What is the value of X?
A.11
B.9
C.7
D.6
![What is the value of X A11 B9 C7 D6 class=](https://us-static.z-dn.net/files/ddd/13dd97311c7d2da369f38be276f05a24.png)
Answer:
x=6
Step-by-step explanation:
10x+21x-6=180 ( straight angle)
31x=180+6
x=186/31
x=6