Question

Simplify of 9 upon 21 + 3 upon 21 - 5 upon 21

Answer 1

the question is 9/21+3/21-5/21

Step-by-step explanation:

9+3-5/21

=12-5/21

=7/21

=1/3

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Answer 2

Step-by-step explanation:

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)