Question

please tell the answer step by step​

Answer 1

Answer:

$3x + 50 + 2x - 20 = 180 \\ sum \: of \: the \: trangle \: is \: 180. \\ 5x + 30 = 180 \\ 5x = 180 - 30 \\ x = \frac{150}{5} \\ x = 30 \: ans \: ok$

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