Subtract 21/40 from 54/9
1st number: 6 0/9, 2nd number: 21/40
54/9 - 21/40 is 219/40.
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,
54/9 = 54 × 40/9 × 40 = 2160/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Subtract the two like fractions:
2160/360 - 189/360 = 2160 - 189/360 = 1971/360 - After reducing the fraction, the answer is 219/40
- In mixed form: 519/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/9-42/40 54/18-21/40 54/9-21/80 54/9-63/40 54/27-21/40 54/45-21/40 54/63-21/40