Question 51328
The first one becomes {{{2x+3y+5x+3y=1+1}}} which simplifies to {{{7x+6y=2}}}.  Solving for y we get {{{y=expr(-7/6)x+1/3}}}.  The second set becomes {{{-x-5y=-10}}} which becomes {{{y=expr(-1/5)x+2}}}.  Their graphs are:
{{{graph(200,200,-5,5,-5,5,-7x+1/3,-x/5+2)}}}