Express 0. 27 ( bar in 7) form of p\q
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let x = 0.2777...-----(1)
(multiply both the side by 10)
10x = 2.777...------(2)
from (1),multiply both the side by 100
=>100X =27.777----(3)
subtract (3) from (2)
100x - 10x = 27.777... - 2.777...
90x = 25
x = 25/90
x = 5/18
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