SOLUTION: x-y = 9 Y+x = 17 What is Y What is X

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Question 912635: x-y = 9
Y+x = 17
What is Y
What is X
Found 2 solutions by excellentsolutionas, jim_thompson5910:
Answer by excellentsolutionas(12) About Me  (Show Source):
You can put this solution on YOUR website!
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Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
y+x is the same as x+y. So y+x=17 is the same as x+y = 17

Add the two equations

x-y = 9
x+y = 17
---------
2x+0y = 26

2x = 26 ----> x = 13 (divide both sides by 2)

Now use x = 13 to find x

x-y = 9

13-y = 9

-y = 9-13

-y = -4

y = 4

So the solution is (x,y) = (13,4)


Let me know if you need more help or if you need me to explain a step in more detail.
Feel free to email me at jim_thompson5910@hotmail.com
or you can visit my website here: http://www.freewebs.com/jimthompson5910/home.html

Thanks,

Jim