Subtract 21/40 from 35/4
1st number: 8 3/4, 2nd number: 21/40
35/4 - 21/40 is 329/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
35/4 = 35 × 10/4 × 10 = 350/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Subtract the two like fractions:
350/40 - 21/40 = 350 - 21/40 = 329/40 - In mixed form: 89/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4-21/40 35/4-42/40 35/8-21/40 35/4-21/80 35/4-63/40 35/12-21/40 35/20-21/40 35/28-21/40