Subtract 81/70 from 54/60
1st number: 54/60, 2nd number: 1 11/70
54/60 - 81/70 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
54/60 = 54 × 7/60 × 7 = 378/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Subtract the two like fractions:
378/420 - 486/420 = 378 - 486/420 = -108/420 - After reducing the fraction, the answer is -9/35
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