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(3 supra 4 + 1 supra 2 )×4 supra 25

Răspuns :

SRS?
[tex] \frac{3}{4} + \frac{1}{2} [/tex] => [tex] \frac{3+2}{4} [/tex] =>[tex] \frac{5}{4} [/tex] => [tex] \frac{5}{4} * \frac{4}{25} [/tex] =>[tex] \frac{1}{5} [/tex]