If 1/7!+1/8! =x/8!. find x
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Answer:
1/7!+1/8×7!=x/8×7!
common1/7!
=1/7!(1+1/8)=1/7!×x/8
cancel1/7!from both sides
=(1+1/8)=x/8
=9/8=x/8
cancel 8 from both sides
x=9
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