Subtract 1/16 from 42/40
1st number: 1 2/40, 2nd number: 1/16
42/40 - 1/16 is 79/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
42/40 = 42 × 2/40 × 2 = 84/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
1/16 = 1 × 5/16 × 5 = 5/80 - Subtract the two like fractions:
84/80 - 5/80 = 84 - 5/80 = 79/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-1/16 42/40-2/16 42/80-1/16 42/40-1/32 42/40-3/16 42/40-1/48 42/40-5/16 42/40-1/80 42/40-7/16