Subtract 81/40 from 10/72
1st number: 10/72, 2nd number: 2 1/40
10/72 - 81/40 is -679/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
10/72 = 10 × 5/72 × 5 = 50/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Subtract the two like fractions:
50/360 - 729/360 = 50 - 729/360 = -679/360
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