Answer:
X = 6
<B = 126
Explanation:
Since two horizontal lines are parallel, it's shown with the notches at the tip,
We can conclude that A and B has same measurement because they are alternate exterior angles therefore:
<A = <B
8x + 78 = 2x + 114 export like terms to same side of the equation
8x - 2x = 114 - 78
6x = 36 divide both sides by 6
x = 6
To find the value of angle B replace x with 6
2*6 + 114 = 126