Posted by **jill** on Sunday, November 6, 2011 at 8:28pm.

-k=287.658

divide by o

so k=0?

correct? thenk you

- math -
**Anonymous**, Sunday, November 6, 2011 at 8:35pm
undefined not 0

- math -
**Steve**, Monday, November 7, 2011 at 11:44am
If you're trying to find k, why divide by 0? You divide by the coefficient of k, which is -1.

-k/(-1) = 287.658/(-1)

k = -287.658

Or, to avoid any division at all, just swap sides of the = sign:

-k + k = 287.658 + k

0 = 287.68 + k

-287.658 = 287.658 + k - 287.658

-287.658 = k

You could probably have done that in your head, but I wanted to show the underlying machinery that makes it all happen.

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