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2 NR COSECUTIVE NATURALE CARE AU CATUL 1,05



Răspuns :

daca numerele consecutive sunt : x+1 si x , atunc ...[tex]\frac{x+1}{x}=\frac{105}{100}\;\rightarrow\;100x+100=105x\;adica\;100=105x-100x\\ \Rightarrow\;\;5x=100\;deci\;x=20\;si\; x+1=21\\ R:21\;\;si \;\;20[/tex]