Question 75602
Solve the 2nd equation for x
{{{ -x + 3y = -1}}}
{{{-x=-1-3y}}}
{{{x=1+3y}}}
Plug this into {{{4x-12y=5}}}
{{{4(1+3y)-12y=5}}}
{{{4+12y-12y=5}}}
{{{4=5}}}
Since this equality is not true, there is no solution. If you solved both equations for y, you would see that they are parallel lines that never intersect.