Question 1208605
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There are at least two methods to solve this.


Method 1
1/8 + 1/3 = 1/N
3/24 + 8/24 = 1/N
(3+8)/24 = 1/N
11/24 = 1/N ........... this is what you have so far
11N = 24 ........... cross multiply
<font color=red>N = 24/11</font>


Method 2
1/8 + 1/3 = 1/N
24N*(1/8 + 1/3) = 24N(1/N) ........... multiply both sides by LCD to clear out fractions
24N*(1/8) + 24N*(1/3) = 24N(1/N)
3N + 8N = 24
11N = 24
<font color=red>N = 24/11</font>


Side note:
24/11 = 2.181818... 
the "18" repeats forever.
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