Question

ajuda por favor me responda ​

Answer 1

Resposta:

b) m = 7 e n = -3

Explicação passo a passo:

$\left \{ {{m-3n=16} \atop {m+5n=-8}} \right. \\\\\left \{ {{m=16+3n} \atop {m+5n=-8}} \right.\\\\16-3n+5n=-8\\16+8n=-8\\8n=-8-16\\8n=-24:8\\n=-3\\\\m=16+3.(-3)\\m=16-9\\m=7\\\\9m,n)=(7,-3)$