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URGENT !!! DAU COROANA !

Calculati :

a) [tex] \frac{26}{39} + \frac{2}{15} [/tex]
b) [tex] \frac{147}{49} - \frac{22}{9} [/tex]


URGENT DAU COROANA Calculati A Tex Frac2639 Frac215 Tex B Tex Frac14749 Frac229 Tex class=
URGENT DAU COROANA Calculati A Tex Frac2639 Frac215 Tex B Tex Frac14749 Frac229 Tex class=

Răspuns :

a) aducem la acelasi numitor 
numitorul comun este 3x5x13 =195
(26x5 +2x13)/195 =130+26/195 =156/195 =4/5
b) aducem la acelasi numitor 9x49=441
(147x9 -22x49)/441 =(1323 -1078)441=245/441=35/63