Verified Answer :

Rebs

I think it is 0
6= 1-2(0)+5
6=1-0+5
6=1+5
6=6
You should check just in case.

Edmund

\(6=1-2n+5\)
\(6-1-5=-2n\)
\(0=-2n\)
\(0=n\)

\(6=1-2(0)+5\)
\(6=1-0+5\)
\(6=6\)

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