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a fost răspuns

[tex] \frac{337}{31} - \frac{64}{81} [/tex]

Răspuns :

337/31-64/81 =(337*81-31*64)/31*81=(27297-1984)/2511=25313/2511
[tex]\displaystyle \frac{337}{31} - \frac{64}{81} = \frac{27297}{2511} - \frac{1984}{2511} = \frac{25313}{2511} [/tex]