Question 106834
{{{4x-12y=5}}}
{{{-x+ 3y=-1}}}

Solving {{{-x+3y=-1}}},

{{{-x+3y=-1}}}
{{{-x+3y-3y=-1-3y}}}
{{{-x+3y-3y=-3y-1}}}
{{{-x+0==-3y-1}}}
{{{-x=-3y-1}}}
{{{x=3y+1}}}

Substituting {{{x=3y+1}}} to {{{4x-12y=5}}},

{{{4(3y+1)-12y=5}}}
{{{(12y+4)-12y=5}}}
{{{12y+4-12y=5}}}
{{{(12y-12y)+4=5}}}
{{{0+4=5}}}
{{{4=5}}}   WHAT?



The equations led into a contradictory and false statement 


Therefore, there is no solution.


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