Subtract 20/45 from 4/35
4/35 - 20/45 is -104/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
4/35 = 4 × 9/35 × 9 = 36/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Subtract the two like fractions:
36/315 - 140/315 = 36 - 140/315 = -104/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-20/45 4/35-40/45 4/70-20/45 4/35-20/90 12/35-20/45 4/35-60/45 20/35-20/45 28/35-20/45