Subtract 32/35 from 7/20
7/20 - 32/35 is -79/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
32/35 = 32 × 4/35 × 4 = 128/140 - Subtract the two like fractions:
49/140 - 128/140 = 49 - 128/140 = -79/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-32/35 7/20-64/35 7/40-32/35 7/20-32/70 21/20-32/35 7/20-96/35 7/60-32/35 35/20-32/35 49/20-32/35