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2014-10-26T19:45:48+02:00

60=2²·3·5
200=2³·5²
A=(60,200)=2²·5=20
32=2

80=2
⁴·5

 B=[32,80]=2⁵·5=160
4=2²
6=2·3
[4,6]=2²·3=12
(A,B)=(20,160)=2²·5=20
(A,B)*[4,6]=12·20=240