Question

qual e o mdc ?
a) 20 , 45 
b)48,76
c)64,98,120

Answer 1

a)  20, 45    =>  5

b) 48, 76    =>  4

c) 64, 98, 120   =>  2

Answer 2

a-) 20= 2.2.5
     45 =3.3.5
MDC= 5

b-)48 = 2.2.2.2.3
   76 = 2.2.19 
MDC = 2² = 4

C-)64 = 2.2.2.2.2.2
    98 = 2.7.7
    120 = 2.2.2.3.5
mdc = 2