Question

Реши систему уравнений {a=42a−b=18

Answer 1

Ответ: a=42; b=24

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