Subtract 7/90 from 35/80
35/80 - 7/90 is 259/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
35/80 = 35 × 9/80 × 9 = 315/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
7/90 = 7 × 8/90 × 8 = 56/720 - Subtract the two like fractions:
315/720 - 56/720 = 315 - 56/720 = 259/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-7/90 35/80-14/90 35/80-21/90 35/80-35/90 35/80-49/90