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7/27 + 1/13

va rog ajutor ​


Răspuns :


[tex] \frac{7}{27} + \frac{1}{13} = \frac{7 \times 13}{27 \times 13} + \frac{1 \times 27}{13 \times 27} = \frac{91}{351} + \frac{27}{351} = \frac{91 + 27}{351} = \frac{118}{351} [/tex]