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Question in the link below.

Question in the link below.-example-1
User Damercy
by
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2 Answers

6 votes
We can suggest this equation:
5x=40º+x
5x-x=40º
4x=40º
x=40º/4
x=10º


Answer: x=10º
User Yury Wallet
by
7.8k points
1 vote
The 5x and the combination of (40° + x) are "vertical angles".
Vertical angles are equal.
So
5x = 40° + x

Subtract 'x' from each side: 4x = 40°

Divide each side by 4 : x = ?
User Ostati
by
7.8k points