Subtract 10/14 from 4/21
4/21 - 10/14 is -11/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
4/21 = 4 × 2/21 × 2 = 8/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
10/14 = 10 × 3/14 × 3 = 30/42 - Subtract the two like fractions:
8/42 - 30/42 = 8 - 30/42 = -22/42 - After reducing the fraction, the answer is -11/21
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