Question

The sum of two rational numbers is -8. if one of the is -8/17, find the other​

Answer 1

The other number is -128/17

Explanation:

Let the unknown number be x,

`\tt \longmapsto \: x + ( - 8)/(17) = - 8`

`\tt \longmapsto \: x = ( - 8)/(1) + (8)/(17)`

`\tt \longmapsto \: x = ( - 136 + 8)/(17)`

`\tt \longmapsto \: x = ( - 128)/(17)`