Question

Me ajuda pfv gente
pfvvv, alguém?​

Answer 1

Resposta:

Explicação passo a passo:

$(I)+(II)$

$2a-2b=0$

$(II)+(III)$

$2a=2$

$a=2/2$

$a=1$

$2a-2b=0$

$2.(1)-2b=0$

 $2-2b=0$

    $2b=2$

      $b=2/2$

      $b=1$

$J\acute{a}\:temos\:(a)\:e\:(b)\:ok!$

$(III)$

$a+b-c=1$

$1+1-c=1$

    $2-c=1$

    $2-1=c$

      $c=1$

 $S=(a;b;c)=(1;1;1)$