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Afla x din:
x-9/31=7/31;
x-1/2=9/2;
x-17/2=3/2;
x-1/7=5/7

DAU COROANĂ​


Răspuns :

Răspuns:

x=7/31+9/31=16/31

x=9/2+1/2=10/2=5

x=3/2+17/2=20/2=10

x=5/7+1/7=6/7