Step-by-step explanation:
Hey there!
Your required answer is option B.
Here,
Given,
The figure is an equilateral triangle with, side (7x+9) and (x+27).
By the defination of equilateral triangle we have,
All sides of equilateral triangle are equal.
So,
![( 7x+ 9) = x + 27](/tpl/images/0784/6457/0ffa9.png)
Simplify them to get answer.
![7x - x = 27 - 9](/tpl/images/0784/6457/b8496.png)
![6x = 18](/tpl/images/0784/6457/e675b.png)
![x = \frac{18}{6}](/tpl/images/0784/6457/d563e.png)
Therefore the value of x is 3.
Hope it helps...