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6 supra 7 x= 5 supra 8

Răspuns :

[tex] \frac{6}{7} x= \frac{5}{8} [/tex]
[tex]x= \frac{5}{8} : \frac{6}{7}
 x= \frac{5}{8} . \frac{7}{6}
 x= \frac{35}{48} [/tex]
inmultim in x =
6 ori 8=48 
7 ori 5x=35x
x=35 supra 48