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1- 7/4 (7supra4) va rog mult 15 puncte

Răspuns :


[tex]1 - \frac{7}{4} = \frac{4}{4} - \frac{7}{4} = - \frac{3}{4} [/tex]
1-7/4=4/4-7/4
NC=4
4/4-7/4=-3/4