Question

Respondam Porfavor {×+7y=200
{×-11y=2

Answer 1

×+7y=200{x-11y=2(-1)


x + 7y = 200
-x +11y = - 2
     18y = 198
          y = 11

x = 200 - 7y ==> x = 200 -7.11==> x =200-77==> x= 123
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V={( 123, 11)}

Answer 2

$\boxed{ \left \{ {{x+7y=200} \atop {x-11y=2}} \right. }$

$x+7y=200=\ \textgreater \ x=200-7y$


$x-11y=2\\200-7y-11y=2\\-18y=2-200\\-18y=-198*(-1)\\y= \frac{198}{18} \\\boxed{ y=11}$


$x+7y=200\\x+7*11=200\\x+77=200\\x=200-77\\\boxed{x=123}$

Espero ter ajudado!!
Bons estudos!!