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ca fractie ordinala 1,3(8)

Răspuns :

[tex]1)1.3(8) = 1 \frac{38 - 3}{90} = 1 \frac{35}{90} = \frac{1 \times 90 + 35}{90} = \frac{125}{90} = \frac{25}{18} [/tex]

sau

[tex]2)1.3(8) = \frac{138 - 13}{90} = \frac{125}{90} = \frac{25}{18} [/tex]

1,3(8) = (138-13)/90 = 125/90 = 25/18 (am simplificat cu 5 fractia)