Question

If ( n + 3)! = 20 ( n + 1)! find the value of n.




plz give correct answer friends​

Answer 1

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$(n + 3) = 20(n + 1) \\ \\ n + 3 = 20n + 20 \\ \\ n - 20n = 20 - 3 \\ \\ - 19n = - 17 \\ \\ n = \frac{ - 17}{ - 19} \\ \\ n = \frac{17}{19}$