Question 109765
1.{{{5x-2y = -5}}}       
2.{{{y-5x = 3}}}
Let's use equation 1 and substitute into equation 2.
1.{{{5x – 2y = -5}}} 
{{{5x=2y-5}}}
Now substitute into 2.
2.{{{y-5x=3}}}
{{{y-(2y-5)=3}}}
{{{y-2y+5=3}}}
{{{-y+5=3}}}
{{{-y+5-5=3-5}}}
{{{-y=-2}}}
{{{y=2}}}
From 2,
{{{y-5x=3}}}
{{{2-5x=3}}}
{{{-5x=1}}}
{{{x=-1/5}}}
{{{ graph( 300, 300, -2, 2, -2, 4, 3+5x, (5/2)x+5/2) }}}