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# If 2a 3b =9 and 3a 2b =16 find the value of 3a - 2b.

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• Jim Winger Oct 10, 2010

Hmm, sounds pretty simple. Why are you asking us??

• Jim Winger Oct 10, 2010

Hmm, sounds pretty simple. Why are you asking us??

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(2a+3b)+(3a+2b)=9+16=25
5a+5b=25 so a+b=5
(3a+2b)-(2a+3b)=16-9=7
a-b=7
a+b=5 and a-b=7 so a=6 and b=-1 therefore 3a-2b=20

Posted on Oct 10, 2010

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