These two equations are the same:(adsbygoogle = window.adsbygoogle || []).push({});

M1Vf1+M2Vf2=M1Vo1 + 0

After substituting Vf2= M1(Vo1 –Vf1)/M2 in one of the equations above, it is now Vf1=[(M1-M2)/(M1+M2)]V01

The assignment is to show the steps how the first equation becomes the second after substituting for Vf2. I have tried simplifying the equation in numerous ways, but M1 and M2 keep canceling out, and I end up with Vf1=Vf1. Can anybody help?

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# Simplifying an equation

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