Add 1/35 and 21/12
1st number: 1/35, 2nd number: 1 9/12
1/35 + 21/12 is 249/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
1/35 = 1 × 12/35 × 12 = 12/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Add the two like fractions:
12/420 + 735/420 = 12 + 735/420 = 747/420 - 747/420 simplified gives 249/140
- So, 1/35 + 21/12 = 249/140
In mixed form: 1109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/35+21/12 1/35+42/12 1/70+21/12 1/35+21/24 3/35+21/12 1/35+63/12 1/35+21/36 5/35+21/12 1/35+21/60 7/35+21/12 1/35+21/84