Answer:
The correct answer is option D ,x = 12°
Explanation:
Given : Two straight lines intersecting at common point.
To find = x
Solution :
When two straight lines intersect each other at same point their vertically opposites angle are equal.
So, according to image figure given:
![(7x-4)^o=(6x+8)^o](https://img.qammunity.org/2020/formulas/mathematics/high-school/ocmz5y29zjyyy1wf8uziuoeu4jq0kqkxed.png)
![7x-6x=8+4](https://img.qammunity.org/2020/formulas/mathematics/high-school/b49hn1vmoz29njle8mjcb6o13m7werzdd6.png)
![x=12^o](https://img.qammunity.org/2020/formulas/mathematics/high-school/2qc1la0a7c2d78nwu2ao2kxtgu3e2nc6j1.png)
The value of x = 12°