Question

3/7 + (-6/11) + (-8/21) + (5/22)

Answer 1

3/7+(-6/11)+(-8/21)+(5/22)
3/7-6/11-8/21+5/22
now we need to take LCM for 7,11,21,22
so the LCM=462
198-252-176+105/462
303-428/462
-125/462
# hope it is useful

Answer 2

Solution :-

3/7 + (- 6/11) + (- 8/21) + (5/22)

Taking L.C.M. of the denominators 7, 11, 21 and 22 and then solving it.

L.C.M. of 7, 11, 21 and 22 = 2*3*7*11
= 462
            

= (462/7)*3 - (462/11)*6 - (462/21)*8 + (462/22)*5

= (198/462) - (252/462) - (176/462) + (105/462)

= (303/462) - (428/462)

= (-125/462)

Answer.