Subtract 18/81 from 48/21, Solve 2 6/21

Subtract 18/81 from 48/21

1^st number: 2 6/21, 2^nd number: 18/81

48/21 - 18/81 is 130/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 21 × 27 = 567,
48/21 = 48 × 27/21 × 27 = 1296/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
18/81 = 18 × 7/81 × 7 = 126/567
Subtract the two like fractions:
1296/567 - 126/567 = 1296 - 126/567 = 1170/567
After reducing the fraction, the answer is 130/63
In mixed form: 24/63

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