Question 359037
1.{{{7x - y= -1}}}
2.{{{y= 14x+5}}}
Substitute eq. 2 into eq. 1,
{{{7x-(14x+5)=-1}}}
{{{7x-14x-5=-1}}}
{{{-7x=4}}}
{{{highlight(x=-4/7)}}}
Then from eq. 2,
{{{y=14(-4/7)+5}}}
{{{y=-8+5}}}
{{{highlight(y=-3)}}}