Subtract 56/28 from 4/21
1st number: 4/21, 2nd number: 2 0/28
4/21 - 56/28 is -38/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
4/21 = 4 × 4/21 × 4 = 16/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
56/28 = 56 × 3/28 × 3 = 168/84 - Subtract the two like fractions:
16/84 - 168/84 = 16 - 168/84 = -152/84 - After reducing the fraction, the answer is -38/21
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