Subtract 25/20 from 7/27
1st number: 7/27, 2nd number: 1 5/20
7/27 - 25/20 is -107/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
7/27 = 7 × 20/27 × 20 = 140/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
25/20 = 25 × 27/20 × 27 = 675/540 - Subtract the two like fractions:
140/540 - 675/540 = 140 - 675/540 = -535/540 - After reducing the fraction, the answer is -107/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/27-25/20 7/27-50/20 7/54-25/20 7/27-25/40 21/27-25/20 7/27-75/20 7/81-25/20 7/27-25/60 35/27-25/20 49/27-25/20