Question

A)mdc ( 18,49)=
B)mdc (40,30)=
C)mdc (63,70)=
D) mdc(40,70)=

Answer 1

mdc  (40,30 )=10         mdc(63,70) =7          mdc (40,70) = 10

40, 30 I 2                    63,70 I 2                      40, 70 I 2

20,15  I 2                    63,35 I 3                       20,35 I2

10,15  I 2                    21,35 I 3                       10,35 I 2

 5,15   I 3                      7,35 I 5                         5,35 I5

 5,5     I 5                       7,7  I 7                          1,7  I7

 1,1                                1,1                                 1,1