Subtract 3/21 from 54/8
1st number: 6 6/8, 2nd number: 3/21
54/8 - 3/21 is 185/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
54/8 = 54 × 21/8 × 21 = 1134/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
3/21 = 3 × 8/21 × 8 = 24/168 - Subtract the two like fractions:
1134/168 - 24/168 = 1134 - 24/168 = 1110/168 - After reducing the fraction, the answer is 185/28
- In mixed form: 617/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8-6/21 54/16-3/21 54/8-3/42 54/8-9/21 54/24-3/21 54/8-3/63 54/8-15/21 54/40-3/21 54/56-3/21