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daca a/3=b/2 si b/4=c/5 determinati valoarea raportului nr a si b


Răspuns :

a/3=b/2     rezulta ca :

a/b=3/2


a/3=b/2=k=> a=3k si b=2k => a/b=3k/2k=3/2;;; b/4=c/5 => 2k/4=c/5=>k/2=c/5=>c=5k/2 => a/c=6/5