Subtract 45/40 from 81/28
1st number: 2 25/28, 2nd number: 1 5/40
81/28 - 45/40 is 99/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
81/28 = 81 × 10/28 × 10 = 810/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Subtract the two like fractions:
810/280 - 315/280 = 810 - 315/280 = 495/280 - After reducing the fraction, the answer is 99/56
- In mixed form: 143/56
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