Subtract 21/25 from 3/30
3/30 - 21/25 is -37/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 25 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
3/30 = 3 × 5/30 × 5 = 15/150 - Likewise, for the 2nd fraction, since 25 × 6 = 150,
21/25 = 21 × 6/25 × 6 = 126/150 - Subtract the two like fractions:
15/150 - 126/150 = 15 - 126/150 = -111/150 - After reducing the fraction, the answer is -37/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-21/25 3/30-42/25 3/60-21/25 3/30-21/50 9/30-21/25 3/30-63/25 3/90-21/25 3/30-21/75 15/30-21/25 21/30-21/25