a) mmc (18,42) = 2 • 3 • 3 • 7 = 126

b) mmc (24,35) = 5 • 5 • 7 = 175

c) mmc (72,18) = 2 • 2 • 2 • 3 • 3 = 72

d) mmc (46,51) = 2 • 3 • 17 • 23 = 2.346

Explicação passo-a-passo:

a) 18 , 42 | 2

9 , 21 | 3

3 , 7 | 3

1 , 7 | 7

1 , 1

mmc (18,42) = 2 • 3 • 3 • 7 = 126

b) 25 , 35 | 5

5 , 7 | 5

1 , 7 | 7

1 , 1

mmc (24,35) = 5 • 5 • 7 = 175

c) 72 , 18 | 2

36 , 09 | 2

18 , 09 | 2

09 , 09 | 3

03 , 03 | 3

01 , 01 |

mmc (72,18) = 2 • 2 • 2 • 3 • 3 = 72

d) 46 , 51 | 2

23 , 51 | 3

23 , 17 | 17

23 , 1 | 23

01 , 01 |

mmc (46,51) = 2 • 3 • 17 • 23 = 2.346

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