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Could somebody please solve this for me?

Could somebody please solve this for me?-example-1
User TonyUser
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1 Answer

12 votes

Check the picture below.


a+b=180\implies b=180-a \\\\\\ \stackrel{\textit{substituting on the 2nd equation}}{a-39=2(180-a)}\implies a-39=360-2a\implies 3a-39=360 \\\\\\ 3a=321\implies a = \cfrac{321}{3}\implies \boxed{a = 107}~\hfill \boxed{\stackrel{180-107}{b = 73}}

Could somebody please solve this for me?-example-1
User Jamarr
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