Answer:
6 = x
Step-by-step explanation:
<B is Angle Bisector, so you set both bottom expressions equal to each other:
4x - 16 = 2x - 4
-4x -4x
-----------------
-16 = -2x - 4
+ 4 + 4
--------------
-12 = -2x [Divide by -2]
6 = x
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