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14-03-2017
Mathematics

contestada

Angle A is 21 less than twice as large as its supplement, Angle B

Respuesta :

19-03-2017

B=180-A and A=2B-21

A=180-B and A=2B-21

180-B=2B-21

201=3B

B=67, then A=180-67=113 so

A=113 and B=67

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