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help me :
9supra 3 + 3supra 9 =


Răspuns :

[tex]\displaystyle \frac{9}{3} + \frac{3}{9} = \frac{27+3}{9} = \frac{30}{9} = \frac{10}{3} [/tex]
[tex] \frac{9}{3} + \frac{3}{9} = \\ \frac{27}{9} + \frac{3}{9} = \\ \frac{30}{9} \\ \frac{10}{3} [/tex]