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aflati:a)a,b,c daca abc=7*100+2
b)a,b,c daca 4b9d=1000*a+5*100+c*10+1
c)a,b daca 12a4b6 are suma cifrelor 16
d)a,b daca b5a=5ab
e)a,b,c daca a2b1c=5c1bc
f)a,b,c,d daca abc5=badc