Subtract 1/80 from 42/25
1st number: 1 17/25, 2nd number: 1/80
42/25 - 1/80 is 667/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
42/25 = 42 × 16/25 × 16 = 672/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
1/80 = 1 × 5/80 × 5 = 5/400 - Subtract the two like fractions:
672/400 - 5/400 = 672 - 5/400 = 667/400 - In mixed form: 1267/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-1/80 42/25-2/80 42/50-1/80 42/25-3/80 42/75-1/80 42/25-5/80 42/25-7/80