Subtract 30/81 from 28/9, Solve 3 1/9

Subtract 30/81 from 28/9

1^st number: 3 1/9, 2^nd number: 30/81

28/9 - 30/81 is 74/27.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81

Next, find the equivalent fraction of both fractional numbers with denominator 81
For the 1st fraction, since 9 × 9 = 81,
28/9 = 28 × 9/9 × 9 = 252/81
Likewise, for the 2nd fraction, since 81 × 1 = 81,
30/81 = 30 × 1/81 × 1 = 30/81
Subtract the two like fractions:
252/81 - 30/81 = 252 - 30/81 = 222/81
After reducing the fraction, the answer is 74/27
In mixed form: 220/27

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