Subtract 1/10 from 21/75
21/75 - 1/10 is 9/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 10 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Likewise, for the 2nd fraction, since 10 × 15 = 150,
1/10 = 1 × 15/10 × 15 = 15/150 - Subtract the two like fractions:
42/150 - 15/150 = 42 - 15/150 = 27/150 - After reducing the fraction, the answer is 9/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-1/10 21/75-2/10 21/75-1/20 63/75-1/10 21/75-3/10 21/75-1/30 21/75-5/10 21/75-1/50 21/75-7/10 21/75-1/70