Question 653478

{{{3=-n+1}}}.........add {{{n}}} to both sides


{{{3+n=-n+n+1}}}


{{{3+n=-cross(n)+cross(n)+1}}}


{{{3+n=1}}}........add {{{-3}}} to both sides


{{{3-3+n=1-3}}}


{{{cross(3)-cross(3)+n=-2}}}

{{{highlight(n=-2)}}}