Subtract 4/40 from 42/8
1st number: 5 2/8, 2nd number: 4/40
42/8 - 4/40 is 103/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
42/8 = 42 × 5/8 × 5 = 210/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
4/40 = 4 × 1/40 × 1 = 4/40 - Subtract the two like fractions:
210/40 - 4/40 = 210 - 4/40 = 206/40 - After reducing the fraction, the answer is 103/20
- In mixed form: 53/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8-4/40 42/8-8/40 42/16-4/40 42/8-4/80 42/8-12/40 42/24-4/40 42/8-20/40 42/40-4/40 42/8-28/40 42/56-4/40