Subtract 21/20 from 60/81
1st number: 60/81, 2nd number: 1 1/20
60/81 - 21/20 is -167/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
60/81 = 60 × 20/81 × 20 = 1200/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
21/20 = 21 × 81/20 × 81 = 1701/1620 - Subtract the two like fractions:
1200/1620 - 1701/1620 = 1200 - 1701/1620 = -501/1620 - After reducing the fraction, the answer is -167/540
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