Question 541019
N = Number
8n = Another Number

{{{1/n + 1/8n = 81/8}}}

Get common denominator:
{{{ (8/8 * 1/n) + 1/8 = 81/8}}}


{{{8/8n + 1/8n = 81/8}}}


{{{9/8n = 81/8}}}


{{{9*8 = 81*8n}}}


{{{72 = 648n}}}


n = 72/648 or 1/9


Number = 1/9
Another number = 8/9