Διασκεδαστικά Μαθηματικά (*)-Πρόβλημα 2(den to eluse kaneis)

parakalw ta problhmata na ta lunete monoi sas mhn anakalupsw oti psaxnete tis luseis etoimes...alliws den uparxei nohma na ta bazw..eleos..kurie 3eniwth!!

file tin lisi tin vrika alla dn tin eipa....

mhpws prepei na pros8eseis oti o ari8mos prepei na einai apo to 1 ews to 9?

symfwna me thn ekfwnhsh as poume ton ari8mo x kai to teliko apotelesma a tote
(3*x-1)*3 +x=a <=> 10x=a ara to a einai pol/sio tou 10. ola ta pol/sia tou 10 exoun tis monades tous ises me mhden. afou oi monades einai ises me mhden ama diairesoume to a me to 10 oi monades tou einai ises me to x. oed
(gia na isxyoun ta parapanw prepei o ari8mos na einai akeraios)

oxi spuro ma8hmatikoi ta xoun grapsei ayta ara einai oloklhro kai swsto....

la8os spuro eisai polu konta omws

dld akoma kai oi mh akeraioi ari8moi...einai dektes times??