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2014-10-16T20:03:01+03:00
2014-10-16T20:03:08+03:00
X+y=77;x:y=4 rest 7;x=4y+7(teorema impartirii cu rest)D=c*i+r                                    4y+7+y=77;5y=77-7;5y=70;y=70:5;y=14;x=4*14+7=56+7=63