Add 12/8 and 35/21
1st number: 1 4/8, 2nd number: 1 14/21
12/8 + 35/21 is 19/6.
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,
12/8 = 12 × 21/8 × 21 = 252/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
35/21 = 35 × 8/21 × 8 = 280/168 - Add the two like fractions:
252/168 + 280/168 = 252 + 280/168 = 532/168 - 532/168 simplified gives 19/6
- So, 12/8 + 35/21 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+35/21 12/8+70/21 12/16+35/21 12/8+35/42 36/8+35/21 12/24+35/21 12/8+35/63 60/8+35/21 12/40+35/21 84/8+35/21 12/56+35/21