Question 944451
From eq. 2,
{{{y=4x+11}}}
Substitute into eq. 1,
{{{2(4x+11)+10x+18=4}}}
{{{8x+22+10x+18=4}}}
{{{18x=-36}}}
{{{x=-2}}}
So then,
{{{y=4(-2)+11}}}
{{{y=-8+11}}}
{{{highlight(y=3)}}}