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:

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