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a-b=2000
a÷b=13 r 104
Cat e a si cat e b


Răspuns :

Din a:b=13 rest 104 => a=13b+104
Inlocuim in a-b=2000
13b+104-b=2000
12b+104=2000
12b=2000-104
12b=1896
b=1896:12
b=158
a=13x158+104
a=2054+104
a=2158
Verificare: 2158-158=2000