Subtract 40/36 from 25/21
1st number: 1 4/21, 2nd number: 1 4/36
25/21 - 40/36 is 5/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
25/21 = 25 × 12/21 × 12 = 300/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
40/36 = 40 × 7/36 × 7 = 280/252 - Subtract the two like fractions:
300/252 - 280/252 = 300 - 280/252 = 20/252 - After reducing the fraction, the answer is 5/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-40/36 25/21-80/36 25/42-40/36 25/21-40/72 75/21-40/36 25/63-40/36