Add 27/21 and 25/8
1st number: 1 6/21, 2nd number: 3 1/8
27/21 + 25/8 is 247/56.
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,
27/21 = 27 × 8/21 × 8 = 216/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
25/8 = 25 × 21/8 × 21 = 525/168 - Add the two like fractions:
216/168 + 525/168 = 216 + 525/168 = 741/168 - 741/168 simplified gives 247/56
- So, 27/21 + 25/8 = 247/56
In mixed form: 423/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+25/8 27/21+50/8 27/42+25/8 27/21+25/16 81/21+25/8 27/21+75/8 27/63+25/8 27/21+25/24 27/21+25/40 27/21+25/56