The value of 1.999... in the for m of p/q, when p and q are integers and q is not equal to zero
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let the value of 1.999... be x
let x= 1.999...
10x=19.999...
10x-x=19.999...-1.999
9x=18
x=18/9 or 2
let x= 1.999...
10x=19.999...
10x-x=19.999...-1.999
9x=18
x=18/9 or 2
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