Question 375139
1.{{{6x-y=21}}}
2.{{{6x+7y=-3}}}
Subtract eq. 1 from eq. 2,
{{{6x+7y-6x+y=-3-21}}}
{{{8y=-24}}}
{{{highlight(y=-3)}}}
Use either equation to solve for {{{x}}},
{{{6x+3=21}}}
{{{6x=18}}}
{{{highlight(x=3)}}}