Subtract 21/40 from 49/20
1st number: 2 9/20, 2nd number: 21/40
49/20 - 21/40 is 77/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
49/20 = 49 × 2/20 × 2 = 98/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Subtract the two like fractions:
98/40 - 21/40 = 98 - 21/40 = 77/40 - In mixed form: 137/40
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