Question

Решите плиз (100 б.)
4x-3y=-1
x-5y=4

Answer 1

Внизу есть решение )))))))))

Answer 2

$\left \{ {{4x-3y=-1} \atop {x-5y=4}} \right.\\\\\left \{ {{x=5y+4} \atop {4*(5y+4)-3y=-1}} \right.\\\\\left \{ {{x=5y+4} \atop {20y+16-3y=-1}} \right.\\\\\left \{ {{x=5y+4} \atop {17y=-17}} \right.\\\\\left \{ {{y=-1} \atop {x=5*(-1)+4}} \right.\\\\\left \{ {{x=-1} \atop {y=-1}} \right.$

Ответ : (- 1 ; - 1)