Find the measure of each angle. show work

Hi there!

7. We need to figure out the value of the missing angle and subtract that from 180 to find the exterior angle.

WORK:
180 - 28 - 58 = 94
180 - 94 = 86
? = 86 degrees.

8. First, we need to figure out the value of the missing angle and subtract the value of the missing angle from 180 to find the exterior angle.

WORK: 
180 - 35 - 95 = 50
180 - 50 = 130
? = 130 degrees.

9. To solve for x, we need to set the exterior angle equal to its opposite interior angles and solve.

WORK:
8 + 6x = 30 + 4x + 2
2x + 8 = 32
2x = 24
x = 12 degrees

Hope this helps!! :)
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