Add 5/21 and 54/8
1st number: 5/21, 2nd number: 6 6/8
5/21 + 54/8 is 587/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
54/8 = 54 × 21/8 × 21 = 1134/168 - Add the two like fractions:
40/168 + 1134/168 = 40 + 1134/168 = 1174/168 - 1174/168 simplified gives 587/84
- So, 5/21 + 54/8 = 587/84
In mixed form: 683/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+54/8 5/42+54/8 5/21+54/16 15/21+54/8 5/63+54/8 5/21+54/24 25/21+54/8 5/21+54/40 35/21+54/8 5/21+54/56