Subtract 14/81 from 28/16, Solve 1 12/16

Subtract 14/81 from 28/16

1^st number: 1 12/16, 2^nd number: 14/81

28/16 - 14/81 is 511/324.

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,
28/16 = 28 × 81/16 × 81 = 2268/1296
Likewise, for the 2nd fraction, since 81 × 16 = 1296,
14/81 = 14 × 16/81 × 16 = 224/1296
Subtract the two like fractions:
2268/1296 - 224/1296 = 2268 - 224/1296 = 2044/1296
After reducing the fraction, the answer is 511/324
In mixed form: 1187/324

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