Subtract 81/12 from 7/72
1st number: 7/72, 2nd number: 6 9/12
7/72 - 81/12 is -479/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
7/72 = 7 × 1/72 × 1 = 7/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
81/12 = 81 × 6/12 × 6 = 486/72 - Subtract the two like fractions:
7/72 - 486/72 = 7 - 486/72 = -479/72
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