Subtract 30/27 from 2/20
1st number: 2/20, 2nd number: 1 3/27
2/20 - 30/27 is -91/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
2/20 = 2 × 27/20 × 27 = 54/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
30/27 = 30 × 20/27 × 20 = 600/540 - Subtract the two like fractions:
54/540 - 600/540 = 54 - 600/540 = -546/540 - After reducing the fraction, the answer is -91/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-30/27 2/20-60/27 2/40-30/27 2/20-30/54 6/20-30/27 2/20-90/27 2/60-30/27 2/20-30/81 10/20-30/27 14/20-30/27