Subtract 25/20 from 42/9
1st number: 4 6/9, 2nd number: 1 5/20
42/9 - 25/20 is 41/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
42/9 = 42 × 20/9 × 20 = 840/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
25/20 = 25 × 9/20 × 9 = 225/180 - Subtract the two like fractions:
840/180 - 225/180 = 840 - 225/180 = 615/180 - After reducing the fraction, the answer is 41/12
- In mixed form: 35/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-25/20 42/9-50/20 42/18-25/20 42/9-25/40 42/9-75/20 42/27-25/20 42/9-25/60 42/45-25/20 42/63-25/20