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Solve for a.s=a+b+c/2
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Solve for a.s=a+b+c/2

User Ptah
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1 Answer

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The solution is


\begin{gathered} s=(a+b+c)/(2) \\ 2s=a+b+c\text{ (cross multiplying)} \\ 2s-b-c=a\text{ } \\ a=2s-b-c \end{gathered}

a=2s-b

User Edikgat
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