Question

If 1/6! +1/7! = x/8! , find x

From permutation and combination chapter from 11 class

Answer 1

Answer:

Step-by-step explanation:

6!=720

7!=5040

8!=40320

1/720+1/5040=x/40320

1/720(1+1/7)=x/40320

8/7=x/56

x=64

Answer 2

Answer:

1/6!+1/7!=x/8!

1/6!+1/7×6!=x/8!

by taking common we can write it as

1/6!(1+1/7)=x/8×7×6!

(7+1)/7=x/8×7

8x=x/8

x=64

Step-by-step explanation:

hope it was helpful and thank you