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Problema 12 detaliar varog repede dau coroana

Problema 12 Detaliar Varog Repede Dau Coroana class=

Răspuns :

PR= AR-AP=7-2=5
RB=PB-PR=8-5=3
RE=PE-PR=12-5=7
AB=AR+RB=7+3=10
AE=AR+RE=7+7=14