Convert the decimal expansion 0.2777... to a fraction.
1 answer:
A = 0.2777 ... = 0.2(7)
10a = 10 * 0.2(7)=2.(7)
100a = 100 * 0.2(7) = 27.(7)
100a - 10a = 27.(7) - 2.(7)
90a = 25
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