Question

01.Resolva o sistema {5x + y = -1, x+4y = -10

02. resolva o sistema {2x + y = -1, x - 4y = -10​

Answer 1

Resposta:

01.(x,y)=(6/19,-49/19)

01.(x,y)=(6/19,-49/19)02.(x,y)=(-14/9, 19/9)

Explicação passo-a-passo:

01.{y=-1-5x,x+4y=-10

x+4(-1-5x)=-10

x=6/19

y=1-5.6/19

y=-49/19

02.{y=-1-2x,x-4y=-10

x-4(-1-2x)=-10

x=-14/9

y=-1-2x(-14/9)

y=(19/9)