Posted by Anonymous, on Friday, August 15, 2008 at 4:02pm.
Mulitpy it by 5, so that the coefficent of y in each is 20.
so the answer is negative 5 right
so the answer is negative 5 right
No. It is +5, as Bob correcly stated. The coefficient of y in the second equation then becomes -20, so you can eliminate that variable by adding to the first equation.
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