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avatar+16 

If $(a_1,a_2,\ldots,a_{17})$ satisfy \begin{align*} a_1 + a_2 + a_3 &= 1, \\ a_2 + a_3 + a_4 &= 2, \\ a_3 + a_4 + a_5 &= 3, \\ &~~\vdots \\ a_{15} + a_{16} + a_{17} &= 15, \\ a_{16} + a_{17} + a_{1} &= 16, \\ a_{17} + a_{1} + a_{2} &= 17, \end{align*} what is the value of $a_{17}$?

 Nov 27, 2018
 #1
avatar+96956 
+2

I will not answer your questions unless you present them properly.

 

How you ask....

 

Copy all the stuff between the dollar signs.

Open the latex box that you can see in the ribbon.

Paste it in there and press ok.

That should do it.

 Nov 27, 2018

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