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Determinati abc stiind ca: ab7+a3c+4bc=825.

Răspuns :

ab7+a3c+4bc=825
100a+10b+7+100a+30+c+400+10b+c=825
200a+20b+2c=825-437
200a+20b+2c=388
100a+10b+c=194
c=4
100a+10b=190
10a+b=19
b=9
a=1
abc barat este  =   194