Answer:
The Correct option is A) 8
The value of a is 8.
Step-by-step explanation:
Vertical Angles:
The angles opposite each other when two lines cross.
They are always equal.
∠ 2(3a-7)° and ∠ (5a-6)° are vertical angles.Hence are equal.
So on Substituting we get

Applying distributive property we get

The value of a is 8
The Correct option is A) 8
11. 2x-6 = 8
2x=14
x= 7
12. 3y= 24
y=8
13. 5j-3= 772
5j= 775
J= 155
14. 2g+2= 3g+6
-4= g
15. 24=4/3x
4x = 72
X= 18
14 is the GCF because 42 is divisible by 14