Question

Реши систему уравнений {a=42a−b=24

ответ: a=

,b=

Answer 1

$\left \{ {{a=42} \atop {a-b=24}} \right. \\\\\left \{ {{a=42} \atop {42-b=24}} \right.\\\\\left \{ {{a=42} \atop {b=42-24}} \right.\\\\\left \{ {{a=42} \atop {b=18}} \right.\\\\Otvet:\boxed{(42;18)}$

Answer 2

$\left \{ {{a=42} \atop {a-b=24}} \right. \\42-b=24\\b=42-24\\b=18\\a=42\;\;\;\;\;b=18$