Subtract 3/81 from 40/3, Solve 13 1/3

Subtract 3/81 from 40/3

1^st number: 13 1/3, 2^nd number: 3/81

40/3 - 3/81 is 359/27.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81

Next, find the equivalent fraction of both fractional numbers with denominator 81
For the 1st fraction, since 3 × 27 = 81,
40/3 = 40 × 27/3 × 27 = 1080/81
Likewise, for the 2nd fraction, since 81 × 1 = 81,
3/81 = 3 × 1/81 × 1 = 3/81
Subtract the two like fractions:
1080/81 - 3/81 = 1080 - 3/81 = 1077/81
After reducing the fraction, the answer is 359/27
In mixed form: 138/27

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