Question

Identifique as geratriz das dizímas:
a)4,111...


b)9,999...


c)5,121212...

Answer 1

A=4,111

X=4,111 x (10)
10X=41,111
10X - X=41,111 - 4,111
9X=37
X=37/9(Fração)

B=9,999

X=9,999 x (10)
10X=99,999
10X - X=99,999 - 9,999
9X=90
X=90/9

C=5,121212

X=5,1212 x (100)
100X=512,12
100X - X= 512,12 - 5,1212
99X=507
X=507/99