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Castron1
a fost răspuns

Calculati:
a)7,(15)+2,(18) - 5,(23)+11,(20)
b) -5,2(7) + 6,1(3) - 3,5(3) + 2,2(2).
va rog muuul!!!!!

Răspuns :

7,(15)=(715-7)/99=602/99
2,(18)=(218-2)/99=216/99=26/11
5,(23)=(523-5)/99=518/99
11,(20)=1120-11)/99=1109/99
=>
(602+216+518+1109)/99=2445/99=24,(69)

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