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7x-12+3x+28=180 degrees
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Answer :

CHLOEBRASHEARGO

Answer:

180 degrees

Step-by-step explanation:

i think im not sure???????                                                                                                                      i hope im right

you put it in the question
Answer = 180


7x+3x =10x
-12+28=16
So,
10x+16=180
10x=164
x

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