what is the rational number equivalent to 1.28 repeating

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21-06-2016
Mathematics

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what is the rational number equivalent to 1.28 repeating

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cxmadison cxmadison · Answer 1 · 2016-06-22T15:05:40+02:00

cxmadison cxmadison

22-06-2016

100*1.2828...= 128.28282828..( so on..)
100x=128.28

then you do 100x - x = 128.2828...- 1.2828..

then we subtract the .282828... part

99x = 127

then divide boths sides by 99 and then x=127/99

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