Question

4x+2y=2 5x+2y=0
Решите систему

Answer 1

$left { {{4x+2y=2 } atop {5x+2y=0}} right. left { {{4x+2y=2} atop {-5x-2y=0}} right. |+ left { {{4x+2y=2} atop {-x=2}} right. left { {{y=5} atop {x=-2}} right. \OTBET:(-2;5)$

Answer 2

Спасибо