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iren [92.7K]
3 years ago
14

Question in the link below.

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0
We can suggest this equation:
5x=40º+x
5x-x=40º
4x=40º
x=40º/4
x=10º


Answer: x=10º
olga_2 [115]3 years ago
3 0
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 =  ?
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