Answer:
12
Step-by-step explanation:
The sum of two interior angles in a triangle is equal to an exterior angle that's supplementary to the third interior angle
30 + 4x + 2 = 8 + 6x
32 + 4x = 8 + 6x
32 - 8 = 6x - 4x
24 = 2x divide both sides by 2
12 = x
