Subtract 20/16 from 30/25
1st number: 1 5/25, 2nd number: 1 4/16
30/25 - 20/16 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 16 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
30/25 = 30 × 16/25 × 16 = 480/400 - Likewise, for the 2nd fraction, since 16 × 25 = 400,
20/16 = 20 × 25/16 × 25 = 500/400 - Subtract the two like fractions:
480/400 - 500/400 = 480 - 500/400 = -20/400 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25-20/16 30/25-40/16 30/50-20/16 30/25-20/32 90/25-20/16 30/25-60/16 30/75-20/16 30/25-20/48 30/25-20/80