Subtract 20/9 from 81/12
1st number: 6 9/12, 2nd number: 2 2/9
81/12 - 20/9 is 163/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
81/12 = 81 × 3/12 × 3 = 243/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
20/9 = 20 × 4/9 × 4 = 80/36 - Subtract the two like fractions:
243/36 - 80/36 = 243 - 80/36 = 163/36 - In mixed form: 419/36
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