Respuesta :
[87/100+87/10000......]
a
------ a=87/100 r=87/100
1–r
.
. . 87/100
----------- =87/13=6 9/13
1–87/100
a
------ a=87/100 r=87/100
1–r
.
. . 87/100
----------- =87/13=6 9/13
1–87/100