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A+b+c=974
A+b=867
B+ c= 342
A,b,c=?


Răspuns :

a+b+c=974
a+b=867
c=(a+b+c)-(a+b)=974-867=107
b+c=342
a=(a+b+c)-(b+c)=974-342=632
b=(a+b+c)-a-c=974-632-107=235

Raspuns: a=632  b=235  c=107
c=974-867
c=107

a=974-342
a=632

b=974-(107+632)
b=974-739
b=235