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a-b=873 a:b=6rest18 a,b=?

Răspuns :

a-b=873
a:b=6rest18=>a=6b+18
6b+18-b=873
5b=873-18
b=855:5
b=171
a=6·171+18=1044
a-b=873
a=6b+18

6b-b=873-18
5b=855
b=171
a=1044