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3/7+(-6/11)+(-8/21)+5/12

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3/7+(-6/11)+(-8/21)+5/12

Posted by Roshan Kumar Kumar 6 years, 3 months ago

CBSE > Class 08 > Mathematics

1 answers

Gaurav Seth 6 years, 3 months ago

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)

1Thank You

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