Subtract 12/25 from 21/8
1st number: 2 5/8, 2nd number: 12/25
21/8 - 12/25 is 429/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 25 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 8 × 25 = 200,
21/8 = 21 × 25/8 × 25 = 525/200 - Likewise, for the 2nd fraction, since 25 × 8 = 200,
12/25 = 12 × 8/25 × 8 = 96/200 - Subtract the two like fractions:
525/200 - 96/200 = 525 - 96/200 = 429/200 - In mixed form: 229/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-12/25 21/8-24/25 21/16-12/25 21/8-12/50 63/8-12/25 21/8-36/25 21/24-12/25 21/8-12/75 21/8-60/25 21/40-12/25 21/8-84/25 21/56-12/25