Subtract 30/25 from 24/21
1st number: 1 3/21, 2nd number: 1 5/25
24/21 - 30/25 is -2/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
24/21 = 24 × 25/21 × 25 = 600/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
30/25 = 30 × 21/25 × 21 = 630/525 - Subtract the two like fractions:
600/525 - 630/525 = 600 - 630/525 = -30/525 - After reducing the fraction, the answer is -2/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21-30/25 24/21-60/25 24/42-30/25 24/21-30/50 72/21-30/25 24/21-90/25 24/63-30/25 24/21-30/75