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22-11-2021
Mathematics

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xenia168 xenia168

22-11-2021

Answer:

x = 11

Step-by-step explanation:

180°( n - 2 ) ÷ n

~~~~~~~~~~

( 7x + 31)° = 180°( 5 - 2 ) ÷ 5

7x + 31 = 108

7x = 77

x = 11

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