Subtract 90/20 from 1/27
1st number: 1/27, 2nd number: 4 10/20
1/27 - 90/20 is -241/54.
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,
1/27 = 1 × 20/27 × 20 = 20/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
90/20 = 90 × 27/20 × 27 = 2430/540 - Subtract the two like fractions:
20/540 - 2430/540 = 20 - 2430/540 = -2410/540 - After reducing the fraction, the answer is -241/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/27-90/20 1/54-90/20 1/27-90/40 3/27-90/20 1/81-90/20 1/27-90/60 5/27-90/20 7/27-90/20