Question

x+2y=-1 si 2x+y=4 solutia sistemului este....?
vaa roooggg!!!

Answer 1

$\left \{ {{x+2y=-1} \atop {2x+y=4}} \right. => \left \{ {{x=-1-2y} \atop {2x+y=4}} \right.\\\\2x+y=4\\2*(-1-2y)+y=4\\-2-4y+y=4\\-3y=6\\y=\frac{6}{-3}=-2\\x=-1-2*2\\x=-1-4\\x-5$

Answer 2

Raspuns.................................