Question

determine mdc (40,16)

Answer 1

40, 16 | 2
20, 8   | 2
10, 4   | 2
5, 2     | 2
5, 1     | 5
1, 1       m.d.c. = 2 . 2 . 2 = 8

Answer 2

mdc⇒40⇒4⇒2
      ⇒16⇒4⇒2

$\frac{40}{16}= \frac{10}{4}= \frac{5}{2}$