Posted by **SAMANTHA** on Tuesday, March 9, 2010 at 9:06pm.

Can anyone explain this in 50 words why the equation turns out like it does?

-6x-18=-6x+5 0x=23 and can not have zero in the denominator. Division by zero is undefined.

15x+18=15x+18 0x=0 Well, if you take anything times zero the resulting product is zero.

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