Question 1090011
{{{10x+3y=11}}}
{{{7x+8y=-11}}}
Multiply eq. 1 by 7 and eq. 2 by 10 and subtract to eliminate x.
{{{70x+21y-70x-80y=77+110}}}
{{{-59y=187}}}
Solve for y then use either equation to solve for x.