Question

calcule o mmc 54 e 20
o mmc de72 e 20
o mmc 72,20 e 54

Answer 1

.
Ola Vanei

a)


mmc/54,20) 

54/2
27/3
  9/3
  3/3
  1

54 = 2*3^3

20/2
10/2
  5/5
  1 

20 = 2^2*5 

mmc(54,20) = 4*3^3*5 = 540

b)

mmc(72,20) 

72:2
36:2
18/2
  9//3
  3/3
  1

72 = 2^3*3^2 

20 = 2^2*5

mmc(72,20) = 2^3*3^2*5 = 360 

c)

mmc(72,20,54)

72 = 2^3*3^2 
20 = 2^2*5
54 = 2*3^3

mmc(72,20,54) = 2^3*3^3*5 = 1080 

.