Add 14/12 and 21/70
1st number: 1 2/12, 2nd number: 21/70
14/12 + 21/70 is 22/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
14/12 = 14 × 35/12 × 35 = 490/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Add the two like fractions:
490/420 + 126/420 = 490 + 126/420 = 616/420 - 616/420 simplified gives 22/15
- So, 14/12 + 21/70 = 22/15
In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/12+21/70 14/12+42/70 14/24+21/70 42/12+21/70 14/12+63/70 14/36+21/70 70/12+21/70 14/60+21/70 98/12+21/70 14/84+21/70