Subtract 1/16 from 42/20
1st number: 2 2/20, 2nd number: 1/16
42/20 - 1/16 is 163/80.
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,
1/16 = 1 × 5/16 × 5 = 5/80 - Subtract the two like fractions:
168/80 - 5/80 = 168 - 5/80 = 163/80 - In mixed form: 23/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-1/16 42/20-2/16 42/40-1/16 42/20-1/32 42/20-3/16 42/60-1/16 42/20-1/48 42/20-5/16 42/20-1/80 42/20-7/16