# math

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-k=287.658

divide by o
so k=0?

correct? thenk you

• math -

undefined not 0

• math -

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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