Subtract 20/36 from 21/14
1st number: 1 7/14, 2nd number: 20/36
21/14 - 20/36 is 17/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 14 × 18 = 252,
21/14 = 21 × 18/14 × 18 = 378/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
20/36 = 20 × 7/36 × 7 = 140/252 - Subtract the two like fractions:
378/252 - 140/252 = 378 - 140/252 = 238/252 - After reducing the fraction, the answer is 17/18
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