Răspunsuri

2014-05-13T17:36:50+03:00
AB+BC+CD=211
BC=2AB
CD=(AB+BC)-5⇒AB+BC=CD+5 
CD+5+CD=211
2CD=206, CD=103
pima relatie devine AB+BC=211-103, AB+BC=108 AB+2AB=108
3AB=108, AB=36, BC=72

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