Question

2x+y=-13
3x-y=-27 resposta do sistema

Answer 1

y=27+3x

substituindo a primeira equacao>>

2x+(27+3x)=-13

2x+27+3x=-13

5x= -40

x= -40:5

x= -8

_____________

Se x= -8, entao

2(-8)+y=-13

y= -13+16

y= 3