Question 1052412
1.{{{(1/3)x+(3/4)y=2}}}
2.{{{(4/9)x-(1/4)y=4}}}
Multiply eq. 2 by 3 and add to eq. 1,
{{{(1/3)x+(3/4)y+(4/3)x-(3/4)y=2+12}}}
{{{(5/3)x=14}}}
{{{x=42/5}}}
Then,
{{{(1/3)(42/5)+(3/4)y=2}}}
{{{42/15+(3/4)y=2}}}
{{{(3/4)y=30/15-42/15}}}
{{{(3/4)y=-12/15}}}
{{{y=-(12/15)(4/3)}}}
{{{y=-16/15}}}