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Afla suma numerelor a , b si c , stiind ca ; 2a








































































































Afla suma numerelor a , b si c stiind ca ; 2a+b+c+=142;
a+2b+c=144; a+b+2c=146









Răspuns :

2a+b+c=142
a+2b+c=144
a+b+2c=146
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4a+4b+4c=432
Dam factor comul pe 4
4*(a+b+c)=432
a+b+c=432:4=18
a+b+c=18
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