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love history [14]
3 years ago
13

Help pleas, i’m fr lost

Mathematics
1 answer:
Serggg [28]3 years ago
8 0

Answer:

x = 6°

Step-by-step explanation:

We know that all the interior angles of a triangle sum up to 180°.

(7x+3)°+(80°)+(55°) = 180°

(7x+3)°+(135°) = 180°

(7x+3)°= 45°

7x = 42°

x = 6°

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defon

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2 years ago
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2 years ago
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3 years ago
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