Subtract 42/20 from 54/8
1st number: 6 6/8, 2nd number: 2 2/20
54/8 - 42/20 is 93/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
54/8 = 54 × 5/8 × 5 = 270/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
42/20 = 42 × 2/20 × 2 = 84/40 - Subtract the two like fractions:
270/40 - 84/40 = 270 - 84/40 = 186/40 - After reducing the fraction, the answer is 93/20
- In mixed form: 413/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8-84/20 54/16-42/20 54/8-42/40 54/24-42/20 54/8-42/60 54/40-42/20 54/56-42/20