Question 423127
{{{2x+y=6}}}



 x|y
-1|8   ..........given {{{x=-1}}}..->....{{{2*(-1)+y=6}}}....->....{{{y=6+2=8}}}
 1|4   ..........given {{{x=1}}}..->.....{{{2*(1)+y=6}}}....->....{{{y=6-2=4}}}
 2|2    ..........given {{{x=2}}}..->.....{{{2*(2)+y=6}}}.->.{{{y=6-4=2}}}
 2|2   ..........given {{{y=2}}}..->...{{{2x+2=6}}}.->.{{{2x=6-2}}}, {{{x=4/2=2}}}
 4|-2..........given {{{y=-2}}}..->..{{{2x-2=6}}}.->.{{{2x=6+2}}}, {{{x=8/2=4}}}