Subtract 49/40 from 20/35
1st number: 20/35, 2nd number: 1 9/40
20/35 - 49/40 is -183/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
20/35 = 20 × 8/35 × 8 = 160/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
49/40 = 49 × 7/40 × 7 = 343/280 - Subtract the two like fractions:
160/280 - 343/280 = 160 - 343/280 = -183/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35-49/40 20/35-98/40 20/70-49/40 20/35-49/80 60/35-49/40