Subtract 72/81 from 28/16
1st number: 1 12/16, 2nd number: 72/81
28/16 - 72/81 is 31/36.
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,
28/16 = 28 × 81/16 × 81 = 2268/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
72/81 = 72 × 16/81 × 16 = 1152/1296 - Subtract the two like fractions:
2268/1296 - 1152/1296 = 2268 - 1152/1296 = 1116/1296 - After reducing the fraction, the answer is 31/36
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