Posted by **Tabby** on Thursday, December 14, 2006 at 4:15pm.

Solve the system

9x-5y=119

18x-10y=238

Double both sides of the first equation and you have

18x-10y =238

which is the same as the second equation. Since the two equations are not independent, there are no unique solutions. Thee are an infinite number of pairs of x and y that will work.

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