Question

решите систему уравнения
3х-у=0
5х-у=0

Answer 1

$\left \{ {{3x-y=0} \atop {5x-y=0}} \right. \left \{ {{y=3x} \atop {5x-y=0}} \right.\\ \\5x-3x=0 \\2x=0 \\x=0 \\y=3*0 \\y=0 \\(x,y)=(0,0)$
 Проверка:
$\left \{ {{3*0-0=0} \atop {5*0-0=0}} \right.\\\\ \left \{ {{0=0} \atop {0=0}} \right.$