Question

Por favo! me ajudem nesses dois

1) Utilizando a decomposição simultânea em fatores primos, calcule

a)mmc (15,25)
b)mmc (16,26)
c)mmc (18,21)
d)mmc (42,56)
e)mmc (48,60)
f)mmc (54,90)

2) Calcule:

a) mmc (15,25)
b) mmc (16,26)
c) mmc (18,21)
d) mmc (42,56)
e) mmc (48,60)
f) mmc (54,90)

eu podia colocar mais pontos mas estou com poucos, pois divido essa conta do brainly com meu primo

Answer 1

a)
mmc (15,25) = 75

15,25: 3
5,25: 5
1,5: 5
1,1    = 3.5.5 = 3.25 = 75
______________________________
b)
mmc (16,26) = 208

16,26: 2
8,13: 2
4,13: 2
2,13: 2
1,13: 13
1,1   =      2.2.2.2.13 = 16.13 = 208
--------------------------------------------------------------
c)
mmc (18,21) = 126

18,21: 2
9, 21: 3
3,7: 3
1,7: 7
1,1      = 2.3.3.7 = 6.21 = 126
***********************************************
d)
mmc (42,56) = 168

42,56: 2
21,28: 2
21,14: 2
21,7: 3
7,7: 7
1,1      =  2.2.2.3.7 = 8.21 = 168
-----------------------------------------------------------
e)
mmc (48,60) = 240

48,60: 2
24,30: 2
12,15: 2
6,15: 2
3,15: 3
1,5: 5
1,1      =  2.2.2.2.3.5 = 16.15 = 240
-----------------------------------------------------
f)
mmc (54,90) = 270

54,90: 2
27,45: 3
9,15: 3
3,5: 3
1,5: 5
1,1       = 2.3.3.3.5 = 6.9.5 = 54.5 = 270