Question

1/n+1 + 1/n+2 = 18/9n+13 pls answer this question quickly, as I have an exam.

Answer 1

1/n+1  +   1/n+2  =  18/9n+13
n+2+n+1/(n+1)(n+2)  =  18/9n+13

2n+3/n²+2n+n+2 = 18/9n+13
2n+3/n²+3n+2 = 18/9n+13

(2n+3)(9n+13) = 18(n²+3n+2)
18n²+26n+27n+39 = 18n²+54n+36
Here we cut 18n² from both sides then we get,
53n+39 = 54n+36
-n = -3
the answer n=3

Maybe this is the right answer..........I'm not sure