SOLUTION: I need help with this problem x+y=7 x-y=9 Please help

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Question 129858: I need help with this problem
x+y=7
x-y=9
Please help
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
adding the two equations __ 2x=16 __ x=8

substituting __ 8+y=7 __ y=-1