Subtract 81/49 from 27/20
1st number: 1 7/20, 2nd number: 1 32/49
27/20 - 81/49 is -297/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
27/20 = 27 × 49/20 × 49 = 1323/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
81/49 = 81 × 20/49 × 20 = 1620/980 - Subtract the two like fractions:
1323/980 - 1620/980 = 1323 - 1620/980 = -297/980
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