Subtract 20/5 from 21/56
1st number: 21/56, 2nd number: 4 0/5
21/56 - 20/5 is -29/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 5 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 5 × 56 = 280,
20/5 = 20 × 56/5 × 56 = 1120/280 - Subtract the two like fractions:
105/280 - 1120/280 = 105 - 1120/280 = -1015/280 - After reducing the fraction, the answer is -29/8
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