Subtract 45/27 from 3/20
1st number: 3/20, 2nd number: 1 18/27
3/20 - 45/27 is -91/60.
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,
3/20 = 3 × 27/20 × 27 = 81/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
45/27 = 45 × 20/27 × 20 = 900/540 - Subtract the two like fractions:
81/540 - 900/540 = 81 - 900/540 = -819/540 - After reducing the fraction, the answer is -91/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-45/27 3/20-90/27 3/40-45/27 3/20-45/54 9/20-45/27 3/60-45/27 3/20-45/81 15/20-45/27 21/20-45/27