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IgorLugansk [536]
3 years ago
11

How to solve this problem pleas help

Mathematics
1 answer:
Jlenok [28]3 years ago
4 0
The interior angles of a polygon add to 180°

3x - 11 + x - 8 + 2x + 7 + x + x + 8 = 180
8x - 4 = 180
8x = 184
x = 23


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