perplexus.info :: Just Math : Simultaneous Settlement

Simultaneous Settlement (Posted on 2012-01-27)

Without solving for x and y, determine all possible values of x*y in this simultaneous equation:

x+x*y = 8 and, y+x*y = 9

Note: Solving for 1/x, 1/y, -x or -y is similarly NOT allowed.

Submitted by K Sengupta

Rating: 5.0000 (2 votes)

Solution: (Hide)

x*y = 6 or 12
For an explanation, refer to the solution submitted by Brian Smith in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
One way	Larry	2012-01-28 15:45:54
No Subject	Benny	2012-01-28 15:35:50
Another solution	Brian Smith	2012-01-28 14:21:27
Hint	K Sengupta	2012-01-28 00:21:49
re: No Subject	Math Man	2012-01-27 20:07:55
No Subject	Dustin	2012-01-27 17:54:57
Possible solution	broll	2012-01-27 14:27:38
Solution	Jer	2012-01-27 11:10:40

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