Question 882452
{{{9x+8y=72}}}
{{{-7x-4y=28}}}
Multiply the second equation by 2 and add them together.
{{{9x+8y-14x-8y=72+56}}}
{{{-5x=128}}}
{{{x=-128/5}}}
.
.
Then,
{{{9(-128/5)+8y=72}}}
{{{8y=360/5+1152/5}}}
{{{8y=1512/5}}}
{{{y=189/5}}}