Question 410020
SOLUTIONS: x+3y=1.............(1)

-3x-3y=-15.................(2)
Equation (1) can be rewritten as
   
  x=-3y+1

Now Divide the whole equation(2) by -3, we get

x+y=5
Substitute the value of x in the above equation we get

-3y+1+y=5
-2y = 4
so, y=-2

Now substitute the value of y in
x=-3y+1
x=-3(-2)+1
x=-5