SOLUTION: x-y=9 x+y=-5
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Question 110984
This question is from textbook
algebra structure and method
:
x-y=9
x+y=-5
This question is from textbook
algebra structure and method
Answer by
stanbon(75887)
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x-y=9
x+y=-5
----------
Add the equtions to get:
2x = 4
x = 2
---------
Substitute into x-y=9
2-y=9
y = -7
============
Cheers,
Stan H.