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va rog va dau coroana

Va Rog Va Dau Coroana class=

Răspuns :

a-b = 14/7

b = 4/7 => a = b+14/7 = 4/7 + 14/7 = 18/7

[tex] \\ a - b = \frac{14}{7} \\ b = \frac{4}{7} \\ a - \frac{4}{7 } = \frac{14}{7} \\ a = \frac{14}{7} + \frac{4}{7} \\ a = \frac{18}{7} [/tex]

Verificare :

[tex] \frac{18}{7} - \frac{4}{7} = \frac{14}{7} [/tex]