Question 54578
What is x and y?
2. x+y=1
  5x+y=-7

ans : given x+y=1 ----I
           5x+y=1 ----II
now multiply eq. I by 5 and subtracted from II
  Then  5*(x+y)-(5x+y)=5-1
        4y=4
         y = 1
substuting this in I we get
         x+1=1
    hence x = 0
ans is x=0 and y=1