Subtract 40/15 from 81/10
1st number: 8 1/10, 2nd number: 2 10/15
81/10 - 40/15 is 163/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
40/15 = 40 × 2/15 × 2 = 80/30 - Subtract the two like fractions:
243/30 - 80/30 = 243 - 80/30 = 163/30 - In mixed form: 513/30
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