Answer: 109
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Explanation:
Angles A and B are supplementary which mean they combine to form a straight line. This further means the angles add to 180.
A+B = 180
(8x-27) + (4x+3) = 180
(8x+4x) + (-27+3) = 180
12x-24 = 180
12x = 180+24
12x = 204
x = 204/12
x = 17
Use this x value to find angles A and B
- A = 8x-27 = 8*17-27 = 109
- B = 4x+3 = 4*17+3 = 71
Note how A+B = 109+71 = 180 to help verify the answer.
