Subtract 81/80 from 20/48
1st number: 20/48, 2nd number: 1 1/80
20/48 - 81/80 is -143/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
20/48 = 20 × 5/48 × 5 = 100/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
81/80 = 81 × 3/80 × 3 = 243/240 - Subtract the two like fractions:
100/240 - 243/240 = 100 - 243/240 = -143/240
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