Subtract 4/45 from 49/20
1st number: 2 9/20, 2nd number: 4/45
49/20 - 4/45 is 85/36.
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,
49/20 = 49 × 9/20 × 9 = 441/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
4/45 = 4 × 4/45 × 4 = 16/180 - Subtract the two like fractions:
441/180 - 16/180 = 441 - 16/180 = 425/180 - After reducing the fraction, the answer is 85/36
- In mixed form: 213/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20-4/45 49/20-8/45 49/40-4/45 49/20-4/90 49/20-12/45 49/60-4/45 49/20-20/45 49/20-28/45