Subtract 7/40 from 7/9
7/9 - 7/40 is 217/360.
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,
7/9 = 7 × 40/9 × 40 = 280/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Subtract the two like fractions:
280/360 - 63/360 = 280 - 63/360 = 217/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-7/40 7/9-14/40 7/18-7/40 7/9-7/80 21/9-7/40 7/9-21/40 7/27-7/40 35/9-7/40 7/9-35/40 7/45-7/40 49/9-7/40 7/9-49/40 7/63-7/40