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849+150-736+904-j=504

Răspuns :

150-736+904-j=849-504
150-736+904-j=345
736+904-j=345+150
736+904-j=495
904-j=736-495
904-j=241
j=904+241
j=1145


849+150-736+904-j=504
999-736+904-j=504 
263+904-j=504 
1167-j=504 
j=1167-504
j=663