Question

Реши систему уравнений 
{0,5k=13
{k+m=-7

Answer 1

$\left \{ {{0,5k=13} \atop {k+m=-7}} \right. \\\\ \left \{ {{k=13:0,5} \atop {k+m=-7}} \right.\\\\ \left \{ {{k=26} \atop {26+m=-7}} \right. \\\\ \left \{ {{k=26} \atop {m=-33}} \right.$