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You cannot, because there is no solution.

5 is not a factor of 144. Therefore 5 is not a factor of (3n + 9)! / (2n + 4)!

Therefore (3n + 9) - (2n + 4) < 5

n < 0.


Also, 2n + 4 must be non-negative.

ie 2n >= -4 or n >= -2.


So the only possible values for n are -1 and -2.


But n = -1 gives 6!/2! = 720/2 = 360

while n = -2 gives 3!/0! = 6

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โˆ™ 2018-04-23 13:31:35
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Q: How do you solve n in factorial (3xn plus 9) divided by factorial (2xn plus 4)144?
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