Răspuns :
(808-a)×2=576
808-a=576:2
808-a=288
a=808-288
a=520
Verificare:
(808-520)×2=
288×2=
576 , deci e corect
Coroana?!?!?!?
808-a=576:2
808-a=288
a=808-288
a=520
Verificare:
(808-520)×2=
288×2=
576 , deci e corect
Coroana?!?!?!?