Subtract 3/16 from 42/20
1st number: 2 2/20, 2nd number: 3/16
42/20 - 3/16 is 153/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
42/20 = 42 × 4/20 × 4 = 168/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
3/16 = 3 × 5/16 × 5 = 15/80 - Subtract the two like fractions:
168/80 - 15/80 = 168 - 15/80 = 153/80 - In mixed form: 173/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-3/16 42/20-6/16 42/40-3/16 42/20-3/32 42/20-9/16 42/60-3/16 42/20-3/48 42/20-15/16 42/20-3/80 42/20-21/16