A. 5
Since both angles are about equal to each other, set them equal to each other in an equation and solve.
2x+4 = 4x-6
-4 -4
2x = 4x-10
-4x -4x
-2x = -10
/ -2 / -2
x = 5
If you want to check, plug 5 in for x on both equations to see if they're the same answers.
2(5)+4 = 14
4(5)-6 = 14
Hope this helped. :)
