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X+Y=15, X-Y=5, (X x Y)-X+Y= ?

According to my calculations, X=10 and Y=5, therefore (X x Y)-X+Y= 45.

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โˆ™ 2010-11-13 23:17:35
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Q: If X plus Y equals 15 and X minus Y equals 5 what is X times Y minus X plus Y?
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