Question

Express each of the following decimal in rational form 0.13ke uper bar

Answer 1

let x = 0.13131313..... --- 1

multiplying 10 on both the sides.

10× x = 0.131313.... × 10

10x = 13.131313 ------- 2

subtract equation 1 from equation 2

10x = 13.131313......

- x = 0.131313.......

9x = 13

x = 13/9

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