Subtract 16/81 from 21/16
1st number: 1 5/16, 2nd number: 16/81
21/16 - 16/81 is 1445/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
21/16 = 21 × 81/16 × 81 = 1701/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
16/81 = 16 × 16/81 × 16 = 256/1296 - Subtract the two like fractions:
1701/1296 - 256/1296 = 1701 - 256/1296 = 1445/1296 - In mixed form: 1149/1296
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