Question

the sum of two rational number is 8 one of the number is -13 by 7 find the other number

Answer 1

let the numbers be x and (-13/7)

then 

x+(-13/7)=8

x-13/7=8

x=8+13/7

x=(56+13)/7

x+69/7

69/7 is the other number

i hope this will help you