Subtract 9/40 from 3/35
3/35 - 9/40 is -39/280.
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,
3/35 = 3 × 8/35 × 8 = 24/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
24/280 - 63/280 = 24 - 63/280 = -39/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/35-9/40 3/35-18/40 3/70-9/40 3/35-9/80 9/35-9/40 3/35-27/40 15/35-9/40 3/35-45/40 21/35-9/40 3/35-63/40