Subtract 21/75 from 42/2
1st number: 21 0/2, 2nd number: 21/75
42/2 - 21/75 is 518/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 2 × 75 = 150,
42/2 = 42 × 75/2 × 75 = 3150/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Subtract the two like fractions:
3150/150 - 42/150 = 3150 - 42/150 = 3108/150 - After reducing the fraction, the answer is 518/25
- In mixed form: 2018/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-21/75 42/2-42/75 42/4-21/75 42/2-63/75 42/6-21/75 42/10-21/75 42/14-21/75