Question

encontre o mmc dos numeros : a) 6,9 b)12,15 c) 12,15,18 d) 15,21 e ) 6,8,10

Answer 1

18
60
180
105
120   :):):):):)

Answer 2

a)
6,9 : 2
3,9: 3
1,3: 3
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1,1 = 2.3.3 = 2.9 = 18

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b)
12,15 : 2
6,15: 2
3,15: 3
1,5: 5
-----------------
1,1  = 2.2.3.5 = 4.15 = 60

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c)
12,15,18:  2
6,15,9: 2
3,15,9: 3
1,5,3: 3
1,5,1: 5
-----------------
1,1,1  =  2.2.3.3.5 = 4.9.5 = 36.5 = 180

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
15,21: 3
5,7: 5
1,7: 7
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1,1  =  3.5.7 = 3.35 = 105 

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e )
 6,8,10: 2
3,4,5: 2
3,2,5: 2
3,1,5: 3
1,1,5: 5
----------------
1,1,1  = 2.2.2.3.5 = 8.15 = 120