Question

calcular as geratrises das seguintes dizimas periodicas composta
a)0,344...=
b)0,23333...=
c)0,1333...=
d)0,2777...=

Answer 1

a) 10x=10.0,34444...
10x= 3,4444....
10x=3+ 4/9
10x=27+4/9
10x=31/9
x=31/90

b) 10x= 2+3/9
10x=18+3/9
10x=21/9
x=21/90

c) 10x=1+3/9
10x=9+3/9
10x=12/9
x=12/90

d)10x= 2+7/9
10x= 18+7/9
10x=25/9
x= 25/90