Question

{x - y - 7 = 0,
{5x – 3y – 1 = 0;
дам 10 баллов решыте пж​

Answer 1

Ответ:

x = 2,75, y = -4,25

Пошаговое объяснение:

$\left \{ {{x-y=7 |*3} \atop {5x-3y=1}} \right. \left \{ {{3x-3y=21} \atop {5x-3y=1}} \right. \left \{ {{8x = 22} \atop {x=\frac{22}{8} = 2,75}} \right. \left \{ {{2,75-y=7} \atop {y=-4,25}} \right.$