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Evgen [1.6K]
3 years ago
13

Find the value of x

Mathematics
1 answer:
Mamont248 [21]3 years ago
5 0
The pentagon has a sum of interior angles of 540 degrees.

Therefore,
(4x + 5) + (5x - 5) + (6x + 10) + (4x + 10) + 7x = 540;
26x = 520;
x = 20;
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