SOLUTION: Solve the system by addition x+y=1 x-y=3

Algebra ->  Linear-equations -> SOLUTION: Solve the system by addition x+y=1 x-y=3      Log On


   

Question 121424: Solve the system by addition
x+y=1
x-y=3
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X+Y=1
X-Y=3 NOW ADD
--------------------
2X=4
X=4/2
X=2 ANSWER.
2+Y=1
Y=1-2
Y=-1 ANSWER.