Subtract 21/56 from 42/20
1st number: 2 2/20, 2nd number: 21/56
42/20 - 21/56 is 69/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
42/20 = 42 × 14/20 × 14 = 588/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Subtract the two like fractions:
588/280 - 105/280 = 588 - 105/280 = 483/280 - After reducing the fraction, the answer is 69/40
- In mixed form: 129/40
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