Subtract 21/14 from 2/5
1st number: 2/5, 2nd number: 1 7/14
2/5 - 21/14 is -11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
2/5 = 2 × 14/5 × 14 = 28/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Subtract the two like fractions:
28/70 - 105/70 = 28 - 105/70 = -77/70 - After reducing the fraction, the answer is -11/10
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