SOLUTION: x+y=2 y=4x+7

Algebra ->  Linear-equations -> SOLUTION: x+y=2 y=4x+7      Log On


   

Question 98801: x+y=2
y=4x+7
Answer by malakumar_kos@yahoo.com(315) About Me  (Show Source):
You can put this solution on YOUR website!

x+y=2
y=4x+7

x+y = 2............(1)
-4x+y = 7...........(2)
subtracting (1) &(2) we get 5x = -5 or x = -1
substituting for x in (1) we get -1+y = 2
y = 2+1 = 3
the values of x and y are -1 and 3 respectively.