Subtract 81/20 from 1/49
1st number: 1/49, 2nd number: 4 1/20
1/49 - 81/20 is -3949/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
1/49 = 1 × 20/49 × 20 = 20/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
81/20 = 81 × 49/20 × 49 = 3969/980 - Subtract the two like fractions:
20/980 - 3969/980 = 20 - 3969/980 = -3949/980
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