Subtract 27/24 from 21/28
1st number: 21/28, 2nd number: 1 3/24
21/28 - 27/24 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
21/28 = 21 × 6/28 × 6 = 126/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168 - Subtract the two like fractions:
126/168 - 189/168 = 126 - 189/168 = -63/168 - After reducing the fraction, the answer is -3/8
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