The numerator of a rational is 8 less than its denominator. if the numerator is increased by 1 and the denominator is decreased by 1 the number obtained is 1 upon 2. find the number
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let the denominator be x
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=>(x-8+1)/(x-1)=1/2
=>(x-7)/(x-1)=1/2
=>2(x-7)=x-1
=>2x-14=x-1
=>2x-x=-1+14
=>x=13
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