Question

Решите систему линейных уравнений:

Answer 1

Ответ:

Объяснение:

$\displaystyle\bf\left \{ {{2x+y=3} \atop {3x+5y=8}} \right.\ \ \ \ \ \left \{ {{y=3-2x} \atop {3x+5(3-2x)=8}} \right. \ \ \ \ \ \left \{ {{y=3-2x} \atop {3x+15-10x=8}} \right.\\\\\\\ \ \ \ \ \left \{ {{y=3-2x} \atop {-7x=8-15}} \right.\ \ \ \ \ \left \{ {{y=3-2x} \atop {-7x=-7}} \right. \ \ \ \ \ \left \{ {{y=3-2\cdot1} \atop {x=1}} \right.\ \ \ \ \ \left \{ {{y=1} \atop {x=1}} \right.\\\\\\Otvet:(1;1)$