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N/2 - 3n/4 - 5n/6 = …

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N/2 - 3n/4 - 5n/6 = 21 then n=?

Posted by Dipti Kataria 5 years ago

CBSE > Class 08 > Mathematics

2 answers

Agrawal Lucky 5 years ago

Hello

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Aryan Gupta 5 years ago

First take out the LCM of the denominators in LHS, i.e., 2, 4 and 6. It is 12. Then divide the 12 by 2 and multiply by the numerator, that is, n. You will get 6n/12. Do it with other 2 fractions also. Now, solve the LHS. Which would be... -25n/12. Now the equation is -25n/12= 21. Take, 12 other side and multiply with 21 and divide -25 by (21×12). Therefore, n= -525/25

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CBSE > Class 08 > Mathematics