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Un mic ex de cl 7:
Restabiliti sirul de rapoarte algebrice egale:
[tex] \frac{x-1}{xy} = \frac{?}{0,5x^3y+xy} [/tex]


Răspuns :

(x-1)/xy=?/(0,5x³y+xy)
(x-1)/xy=?/xy(0,5x²+1)

(x-1)/xy=(x-1)(0,5x²+1)/(0,5x³y+xy)