Subtract 81/40 from 28/45
1st number: 28/45, 2nd number: 2 1/40
28/45 - 81/40 is -101/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
28/45 = 28 × 8/45 × 8 = 224/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Subtract the two like fractions:
224/360 - 729/360 = 224 - 729/360 = -505/360 - After reducing the fraction, the answer is -101/72
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