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Find\ x in each of the following: 1/(6!)...

Find`\ x` in each of the following: `1/(6!)+1/(7!)=x/(8!)`

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`1/(6!)+1/(7!)=x/(8!)`
= `1/(6!)+1/(7×6!)=x/(8×7×6!)`
`1/(6!)`( 1+ `1/7`) = `1/(6!)`( `x/(8×7)`)
x= 64.
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