Asking about simple equation operations.

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by Stuart@KaplanGMAT » Wed Dec 02, 2009 2:38 am
torofish wrote:Image

Can we do that?

Thanks
Yes, you're always allowed to add or subtract equations.

So, to use your example, we could have also subtracted the second equation from the first to get:

B - D = 2/6 = 1/3
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

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