Subtract 20/4 from 7/27
1st number: 7/27, 2nd number: 5 0/4
7/27 - 20/4 is -128/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 4 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
7/27 = 7 × 4/27 × 4 = 28/108 - Likewise, for the 2nd fraction, since 4 × 27 = 108,
20/4 = 20 × 27/4 × 27 = 540/108 - Subtract the two like fractions:
28/108 - 540/108 = 28 - 540/108 = -512/108 - After reducing the fraction, the answer is -128/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/27-20/4 7/27-40/4 7/54-20/4 7/27-20/8 21/27-20/4 7/27-60/4 7/81-20/4 7/27-20/12 35/27-20/4 49/27-20/4 7/27-20/28