Subtract 42/80 from 42/8
1st number: 5 2/8, 2nd number: 42/80
42/8 - 42/80 is 189/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 8 × 10 = 80,
42/8 = 42 × 10/8 × 10 = 420/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Subtract the two like fractions:
420/80 - 42/80 = 420 - 42/80 = 378/80 - After reducing the fraction, the answer is 189/40
- In mixed form: 429/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8-42/80 42/8-84/80 42/16-42/80 42/24-42/80 42/40-42/80 42/56-42/80