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Suma a 4 numere consecutive este 30


Răspuns :

A + (a + 1)+ (a+ 2)+(a +3)=30

a.___.
b.___,1,
c,___,2;
d,___;3;

a=(30-6):4=24:4=6
b=6+1=7
c=7+1=8
d=8+1=9