Subtract 35/40 from 21/9
1st number: 2 3/9, 2nd number: 35/40
21/9 - 35/40 is 35/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
21/9 = 21 × 40/9 × 40 = 840/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
35/40 = 35 × 9/40 × 9 = 315/360 - Subtract the two like fractions:
840/360 - 315/360 = 840 - 315/360 = 525/360 - After reducing the fraction, the answer is 35/24
- In mixed form: 111/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-35/40 21/9-70/40 21/18-35/40 21/9-35/80 63/9-35/40 21/27-35/40 21/45-35/40 21/63-35/40