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Ajutor ! Ex: 3 !!!!!

Ajutor Ex 3 class=

Răspuns :

a-300= 700
a=700+300=1000
b+236=517
b=517-236=281
c-214=609
c=609+214=823
821-d=317
d=821-317=504
246+e=558
e=558-246=312
632-f=443
f=632-443=189
succes !