Question 329798
1.{{{7x-2y=38}}}
2.{{{y=3x}}}
Substituting eq. 2 into eq. 1,
{{{7x-2(3x)=38}}}
{{{7x-6x=38}}}
{{{highlight(x=38)}}}
.
.
.
{{{y=3(38)}}}
{{{highlight(y=114)}}}