SOLUTION: If X2-Y2=28 and X-Y=8 then the average of X and Y is?

SOLUTION: If X2-Y2=28 and X-Y=8 then the average of X and Y is?

Algebra.Com

Question 1016436: If X2-Y2=28 and X-Y=8 then the average of X and Y is?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
By inspection I can tell that x = 5 and y = -3.
Normally you would solve the second equation (x = y+8) and then
substitute into the first...
The average of the variables is 1.
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