Question

mmc de 15 e 12
b) 18,27 e45​

Answer 1

I) 15 e 12:

15,12|2

15,6|2

15,3|3

5,1|5

1,1|**fim**

MMC = 2 . 2 . 3 . 5 = 2² . 3 . 5 = 4 . 3 . 5 = 60

II) 18, 27 e 45:

18,27,45|2

9,27,45|3

3,9,15|3

1,3,5|3

1,1,5|5

1,1,1|**fim**

MMC = 2 . 3 . 3 . 3 . 5 = 2 . 3³ . 5 = 2 . 27 . 5 = 54 . 5 = 270

Answer 2

Outra forma é multiplicar cada n° e ver quando o resultado bate igual, ex:

a) 15 e 12

•multiplicar 15 => 15 , 30 , 45 , 60 , 75

•multiplicar 12 => 12 , 24 , 36 , 48 , 60 ,

O mmc de 15 e 12 = 60

b) 18, 27 e 45

• 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234, 252, 270, 288,...

• 27, 54, 81, 108, 135, 162, 189, 216, 243, 270,...

• 45, 90, 135, 180, 225, 270, ....

O mmc de 18, 27 e 45 = 270