Subtract 35/72 from 3/80
3/80 - 35/72 is -323/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
35/72 = 35 × 10/72 × 10 = 350/720 - Subtract the two like fractions:
27/720 - 350/720 = 27 - 350/720 = -323/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-35/72 3/80-70/72 9/80-35/72 15/80-35/72 21/80-35/72