Question

qual e o mdc entre 20 , 30 e 40

Answer 1

20 30 40 |2
10 15 20 |2
 5  15 10|2
  5  15    5|3
   5 5  5  | 5
  1  1  1  |
MMC= 2*2*3*5=60
MDC = 2*5= 10

Answer 2

$20,30,40|2-\\ 10,15,20|2\\ 05,15,10|2\\ 05,15,05|3\\ 05,05,05|5-\_\_\_\_\\ 01,01,01|2\cdot5=10$

o mdc(20,30,40)=10