Respuesta :

Answer:

= -37/66

Step-by-step explanation:

3/7+(-6/7)+(-8/21)+5/22

3/7 - 6/7 - 8/21 + 5/22

LCM is 462

= 198/462 - 386/462 - 176/462 + 105/462

= -259/462

= -37/66