Respuesta :
You can add - 1/3. Hope it helps! If you could vote my answer as the brainiest, that would be awesome! :)
Answer:
-1/3
Step-by-step explanation:
We need a c number that:
5/6x + cx = 1/2x
We clear the equation:
cx = 1/2x -5/6x
c = 1/2 -5/6
c= -2/6 = -1/3