Add 3/8 and 27/21
1st number: 3/8, 2nd number: 1 6/21
3/8 + 27/21 is 93/56.
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,
3/8 = 3 × 21/8 × 21 = 63/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168 - Add the two like fractions:
63/168 + 216/168 = 63 + 216/168 = 279/168 - 279/168 simplified gives 93/56
- So, 3/8 + 27/21 = 93/56
In mixed form: 137/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8+27/21 3/8+54/21 3/16+27/21 3/8+27/42 9/8+27/21 3/8+81/21 3/24+27/21 3/8+27/63 15/8+27/21 3/40+27/21 21/8+27/21 3/56+27/21