Subtract 49/40 from 20/28
1st number: 20/28, 2nd number: 1 9/40
20/28 - 49/40 is -143/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
20/28 = 20 × 10/28 × 10 = 200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
49/40 = 49 × 7/40 × 7 = 343/280 - Subtract the two like fractions:
200/280 - 343/280 = 200 - 343/280 = -143/280
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