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incercam
45+45+restul 13=103
103/45=2 rest 13
103/30=3 rest 13
103/15=6 rest 13 deci cel mai mic nr este 103
45+45+restul 13=103
103/45=2 rest 13
103/30=3 rest 13
103/15=6 rest 13 deci cel mai mic nr este 103
x:15=c rest 13 ⇒x=15c+13⇒ x-13=15c
x:30=c rest 13 ⇒x=30c+13 ⇒x-13=30c
x:45=c rest 13 ⇒x=45c+13 ⇒ x-13=45c
x-13∈M[15,30,45]
15=3·5
30=2·3·5
45=3²·5
[15,30,45]=3²·2·5=90
M[90]={90,180,270,360,450,540,630,720,810....}
x-13=90
x=90+13
x=103
103:15=6 rest 13
103:30=3 rest 13
103:45=2 rest 13
cel mai mic nr.cautat care indeplineste conditiile este 103
x:30=c rest 13 ⇒x=30c+13 ⇒x-13=30c
x:45=c rest 13 ⇒x=45c+13 ⇒ x-13=45c
x-13∈M[15,30,45]
15=3·5
30=2·3·5
45=3²·5
[15,30,45]=3²·2·5=90
M[90]={90,180,270,360,450,540,630,720,810....}
x-13=90
x=90+13
x=103
103:15=6 rest 13
103:30=3 rest 13
103:45=2 rest 13
cel mai mic nr.cautat care indeplineste conditiile este 103