Subtract 21/75 from 2/30
2/30 - 21/75 is -16/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
2/30 = 2 × 5/30 × 5 = 10/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Subtract the two like fractions:
10/150 - 42/150 = 10 - 42/150 = -32/150 - After reducing the fraction, the answer is -16/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-21/75 2/30-42/75 2/60-21/75 6/30-21/75 2/30-63/75 2/90-21/75 10/30-21/75 14/30-21/75