Subtract 7/80 from 4/9
4/9 - 7/80 is 257/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
4/9 = 4 × 80/9 × 80 = 320/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Subtract the two like fractions:
320/720 - 63/720 = 320 - 63/720 = 257/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-7/80 4/9-14/80 4/18-7/80 12/9-7/80 4/9-21/80 4/27-7/80 20/9-7/80 4/9-35/80 4/45-7/80 28/9-7/80 4/9-49/80 4/63-7/80