SOLUTION: solve the system by addition. x+y=3 and x-y=1

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Question 81923: solve the system by addition. x+y=3 and x-y=1
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=3
x-y=1
-----------------------
2x=4
x=4/2
x=2 answer.
2+y=3
y=3-2
y=1 answer.
proof
2-1=1
1=1