Subtract 81/72 from 15/60
1st number: 15/60, 2nd number: 1 9/72
15/60 - 81/72 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 60 × 6 = 360,
15/60 = 15 × 6/60 × 6 = 90/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Subtract the two like fractions:
90/360 - 405/360 = 90 - 405/360 = -315/360 - After reducing the fraction, the answer is -7/8
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