Subtract 42/60 from 21/2
1st number: 10 1/2, 2nd number: 42/60
21/2 - 42/60 is 49/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 2 × 30 = 60,
21/2 = 21 × 30/2 × 30 = 630/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
42/60 = 42 × 1/60 × 1 = 42/60 - Subtract the two like fractions:
630/60 - 42/60 = 630 - 42/60 = 588/60 - After reducing the fraction, the answer is 49/5
- In mixed form: 94/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-42/60 21/2-84/60 21/4-42/60 63/2-42/60 21/6-42/60 21/10-42/60 21/14-42/60