Question

qual o mdc de 8 e 12

Answer 1

MDC significa Máximo Divisor Comum, ou seja... Qual o maior divisor que divide os dois ao mesmo tempo... Assim:
D(8) = 1,2,4,8
D(12) = 1,2,3,4,6,12
Logo, o MDC entre 8 e 12 é 4.

Answer 2

⇒
8,12|2↓                                                                                                                                4,6  |2   ⇒↓                                                                                                                           2,3 |2    ⇒↓                                                                                                                           1,3|3 ⇒ soma 2x2x2x3=24