Olá

A)

80, 35 | 2

40, 35 | 2

20, 35 | 2

10, 35 | 2

5, 35 | 5

1, 7 | 7

1, 1 | 1

MMC = 2 . 2 . 2 . 2 . 5 . 7 = 560

B)

180, 252 | 2

90, 126 | 2

45, 63 | 3

15, 21 | 3

5, 7 | 5

1, 7 | 7

1, 1 | 1

MMC = 2 . 2 . 3 . 3 . 5 . 7 = 1260

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