Question 306155
1.{{{y = x - 2}}}
{{{4x + 4y = 8}}}
2.{{{x+y=2}}}
Directly substitute eq. 1 into eq. 2,
{{{x+(x-2)=2}}}
{{{2x-2=2}}}
{{{2x=4}}}
{{{highlight(x=2)}}}