Subtract 20/45 from 6/4
1st number: 1 2/4, 2nd number: 20/45
6/4 - 20/45 is 19/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
6/4 = 6 × 45/4 × 45 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Subtract the two like fractions:
270/180 - 80/180 = 270 - 80/180 = 190/180 - After reducing the fraction, the answer is 19/18
- In mixed form: 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4-20/45 6/4-40/45 6/8-20/45 6/4-20/90 18/4-20/45 6/4-60/45 6/12-20/45 30/4-20/45 6/20-20/45 42/4-20/45 6/28-20/45