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PostPosted: Tue Jul 12, 2011 7:28 pm 
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Joined: Tue Feb 22, 2011 11:06 pm
Posts: 75
IPS book2 daily practice ,test 17 Q:3

(12[36]6) (8[44]14)


(15[ ]11)

THE ANSWER IS 52

can anyone could explain the work out please.thankyou.


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PostPosted: Tue Jul 12, 2011 7:33 pm 
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double both sides and add together

(12[36]6)
double 12 + double 6 etc.


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PostPosted: Tue Jul 12, 2011 7:43 pm 
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thank you mitasol


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PostPosted: Tue Jul 12, 2011 8:10 pm 
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Joined: Mon Jan 30, 2006 4:07 pm
Posts: 2660
Or add the 2 outside numbers and then double.

12 plus 6 = 18
18 x 2 = 36

Patricia


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