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Let x = 15.712 [ 12 bar ]x = 15.712121212.............multiply with 10 both sides ,10x = 157.1212121212..............------(1)again,multiply with 1000 both sides ,1000x = 15712.1212121212...........------(2)subtract equation (2) - (1)1000x - 10x = 15712.121212.... - 157.121212....990x = ( 15712 - 157) = 15555x = 15555/990hence, 15555/990 in the form of P/Q of 15.712[ 12 bar]
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That's ur answer
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