Răspuns :
6900:m=56 rest 12
m•56+12=6900
m56=6900-12
m56=6888
m=6888:56
m=123
Verificare:
6900:123=56 rest 12
m•56+12=6900
m56=6900-12
m56=6888
m=6888:56
m=123
Verificare:
6900:123=56 rest 12