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Determinați cifrele a b c stiind ca a×b×c=bc si a×b=c

Răspuns :

axbxc=10b+c
axb=c
cxc=10b+c
2c=10b+c|-c
c=10b
axbx10b=10b+10b
axbx10b=20b|-10b
axb=10b
a=10b:b