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Sa se determine a,b,c nr prime daca:1)a+2b+4c=36
2)4a+6b+5c=74
Va rog urgent!!!!!


Răspuns :

1) a+2b+4c=36; 2b=36 b= 36:2 b= 13; 4c=36 c= 36:4 c= 9; a+13+9=36; a= 36-13-9. a = 14