Subtract 2/45 from 45/20
1st number: 2 5/20, 2nd number: 2/45
45/20 - 2/45 is 397/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
45/20 = 45 × 9/20 × 9 = 405/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
2/45 = 2 × 4/45 × 4 = 8/180 - Subtract the two like fractions:
405/180 - 8/180 = 405 - 8/180 = 397/180 - In mixed form: 237/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-2/45 45/20-4/45 45/40-2/45 45/20-2/90 45/20-6/45 45/60-2/45 45/20-10/45 45/20-14/45