Add 54/8 and 6/21
1st number: 6 6/8, 2nd number: 6/21
54/8 + 6/21 is 197/28.
Steps for adding 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,
6/21 = 6 × 8/21 × 8 = 48/168 - Add the two like fractions:
1134/168 + 48/168 = 1134 + 48/168 = 1182/168 - 1182/168 simplified gives 197/28
- So, 54/8 + 6/21 = 197/28
In mixed form: 71/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8+12/21 54/16+6/21 54/8+6/42 54/8+18/21 54/24+6/21 54/8+6/63 54/8+30/21 54/40+6/21 54/8+42/21 54/56+6/21