Respuesta :

zkthetiger

Answer:

Step-by-step explanation:

As given system of linear equations,

  • - 3х +Зу = 12
  • у=х+ 4

Hence taking 1st equation ,

-3x+3y=12    

-3(x-y)=12   ( common -3 )

  • x-y=-4

now take 2nd equation ,

y=x+4

  • y-x=4

Now add these two equations, we get

x-y+ y- x=-4+4

0x+0y=0

so it have infinite many solution  because for any value L.H.S =R.H.S