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28a=35b si a supra b egal si x supra 36 ,determinati x

Răspuns :

28a=35b⇒a=35b/28
a/b=x/36⇒36a=xb⇒x=36a/b
x=36a/b=[36·(35b)/28]/b=1260b/28:b=simplif=315b/7·1/b=315b/7b=315/7
x=45

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