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Scriind fractia zecimala periodica mixta 1,2(7) sub forma de fractie ordinara

Răspuns :


[tex]1.2(7) = \frac{127 - 12}{9} = \frac{115}{9} [/tex]

[tex]1.2(7) = \frac{127 - 12}{90} = \frac{115}{90} = \frac{23}{18} [/tex]