if 1/9!+1/10!=x/11! them find x??
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Step-by-step explanation:
10!+9!/9!×10!=x/11!
10×9!+9!/9!×10!=x/11!
9!(10+1)/9!×10!=x/11!
11/10!=x/11!
11×11!/10!=x
11×11×10!/10!=x
x=11×11=121
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