Subtract 60/27 from 42/81
1st number: 42/81, 2nd number: 2 6/27
42/81 - 60/27 is -46/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 27 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81 - Likewise, for the 2nd fraction, since 27 × 3 = 81,
60/27 = 60 × 3/27 × 3 = 180/81 - Subtract the two like fractions:
42/81 - 180/81 = 42 - 180/81 = -138/81 - After reducing the fraction, the answer is -46/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/81-60/27 42/81-60/54 42/81-60/81