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vodomira [7]
3 years ago
12

What is the value of x

Mathematics
1 answer:
Goshia [24]3 years ago
3 0
Sum of all adjacent angles is 180°.

3x + 12 + x = 180
4x + 12 = 180
4x = 168
x = 42°

-----------------------------------------
Answer: x = 42°
-----------------------------------------
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