Question

(3a-2b,a+b)=(5,7) por favor​

Answer 1

Resposta:

Explicação passo a passo:

$\left\{\begin{array}{ccc}3a-2b=5\\\\a+b=7\end{array}\right$

$\left\{\begin{array}{ccc}3a-2b=5\\\\2a+2b=14\end{array}\right$

    $5a=19$

     $a=19/5$

     $a=3,8$

    $a+b=7$

    $b=7-a$

    $b=7-3,8$

    $b=3,2$

   $Resposta...$

    $a=3,8$

    $b=3,2$