SOLUTION: If 7x-5y=20and12x+5y=75 xy=?
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Question 1088290: If 7x-5y=20and12x+5y=75 xy=?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Add the equations together to eliminate ,
Solve for , then use either equation to solve for .
Then solve for
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