Question 833722
{{{3x/7+2y=1,x-y=10}}}  is what appears.  
You really mean this:  {{{3x/7+2y=1}}},{{{x-y=10}}}.


What do you want with them?  Graph?  Just intersection point?


{{{3x/7+2y=1}}}
{{{3x+7*2y=7}}}
{{{3x+14y=7}}}
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Add {{{3(x-y)=3*10}}} to {{{3x+14y=7}}}, and continue steps to find x and then y.