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serious [3.7K]
3 years ago
5

Help pleaseeeee will give brainliest

Mathematics
1 answer:
attashe74 [19]3 years ago
3 0

Answer:

q.12

angle ACB=180-123

therefore ACB=57

again 5x-15+7x+6+57=180

or,12x+48=180

or,x=132/12

or x=11

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