Question

Express the decimal 1.27 bar in the form of p upon q

Answer 1

Let x= 1.27---1.272727......
multiply by 100 on both sides.
so,
100x=127.272727.......
then,
100x=127.272727.......
(-)10x = 1.272727.......
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9x =126.000000
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so,
9x=126
x=126÷9
x=14