Subtract 21/8 from 21/14
1st number: 1 7/14, 2nd number: 2 5/8
21/14 - 21/8 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Subtract the two like fractions:
84/56 - 147/56 = 84 - 147/56 = -63/56 - After reducing the fraction, the answer is -9/8
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