SOLUTION: 40/x+y + 2/x-y =5,25/x+y - 3/x-y=1,where x+y is not equal to 0 and x-y is not equal to 0
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Question 970028: 40/x+y + 2/x-y =5,25/x+y - 3/x-y=1,where x+y is not equal to 0 and x-y is not equal to 0
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use a substitution,
So then,
1.
2.
Multiply eq. 1 by 3 and eq. 2 by 2 and add them,
So then,
Substituting back,
3.
.
.
4.
Add eq. 3 to eq. 4,
Then,
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