Question 855346
1.{{{2x-y=4}}}

2.{{{2x+5y=16}}}
Subtract eq. 2 from eq. 1,
{{{2x-y-2x-5y=4-16}}}
{{{-6y=-12}}}
{{{y=2}}}
Then,
{{{2x-2=4}}}
{{{2x=6}}}
{{{x=3}}}