Subtract 81/28 from 63/18
1st number: 3 9/18, 2nd number: 2 25/28
63/18 - 81/28 is 17/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
63/18 = 63 × 14/18 × 14 = 882/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
81/28 = 81 × 9/28 × 9 = 729/252 - Subtract the two like fractions:
882/252 - 729/252 = 882 - 729/252 = 153/252 - After reducing the fraction, the answer is 17/28
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