Respuesta :

the value of the unknown number is 5/58
Le the number be 'n' 
half of 'n' = n/2 
Sum = n/2 + 6 
Ten times = 10(n/2 + 6) = 
Equals 10(n/2 + 6) = 8 

Multiply out the brackets 
10n /2 + 60 = 8 
5n + 60 = 8 
5n = 8 - 60 
5n= -52 
n = -10. 4