Subtract 42/35 from 5/20
1st number: 5/20, 2nd number: 1 7/35
5/20 - 42/35 is -19/20.
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,
5/20 = 5 × 7/20 × 7 = 35/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
42/35 = 42 × 4/35 × 4 = 168/140 - Subtract the two like fractions:
35/140 - 168/140 = 35 - 168/140 = -133/140 - After reducing the fraction, the answer is -19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-42/35 5/20-84/35 5/40-42/35 5/20-42/70 15/20-42/35 5/60-42/35 25/20-42/35 35/20-42/35