Respuesta :

By similarity of triangles we have the following equation:
 (x + 9) / (9) = (x) / (1)
 Clearing the value of x we have:
 (x + 9) = 9x
 Rewriting we have:
 9 = 9x-x
 9 = 8x
 x = 9/8
 Answer:
 
The value of x for this case is given by:
 
x = 9/8