Please help me to answer this question

Mathematics

1 answer:

ikadub [295]3 years ago

5 0

(180-x) + 18 + 30 + x/2 = 180

=> 180 + 48 - x + x/2 = 180

=> -x/2 + 48 = 0

=> x/2 = 48

=> x = 48×2 = 96°

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