Posted by Katie A on Thursday, September 29, 2011 at 10:40pm.
if I solve this by substitution
8x+7y=13
x=297y
I end up with 3.8
But I think there is no solution

Math 116  Reiny, Thursday, September 29, 2011 at 11:38pm
sub the 2nd into the 1st
8(297y) + 7y = 13
232  56y + 7y = 13
49y = 245
y = 245/49 = 5
then x = 29  7(5) = 6

Math 116  Steve, Friday, September 30, 2011 at 11:32am
You should have questioned your "no solution" answer, since the lines have different slopes. The have to intersect somewhere.
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