Subtract 28/40 from 64/9
1st number: 7 1/9, 2nd number: 28/40
64/9 - 28/40 is 577/90.
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,
64/9 = 64 × 40/9 × 40 = 2560/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
28/40 = 28 × 9/40 × 9 = 252/360 - Subtract the two like fractions:
2560/360 - 252/360 = 2560 - 252/360 = 2308/360 - After reducing the fraction, the answer is 577/90
- In mixed form: 637/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/9-56/40 64/18-28/40 64/9-28/80 64/9-84/40 64/27-28/40 64/45-28/40 64/63-28/40