Question 542301
These equations have already been reduced, so all you need to do is combine them in a way that eliminates either the X's or Y's. Notice that #1 has a +y, while #2 has a -y. Those will cancel each other out when added together. So just add the two together.
{{{2x + y = 5}}}
{{{x - y = 1}}}
becomes
{{{3x+0y=6}}}
{{{3x=6}}}
{{{x=2}}}
.
Then just plug into the easier original equation.
2){{{2x+y=5}}}
{{{2(2)+y=5}}}
{{{4+y=5}}}
{{{y=5-4=1}}}
.
Therefore, x=2 and y=1. Hope this helps!