Add 12/21 and 30/14
1st number: 12/21, 2nd number: 2 2/14
12/21 + 30/14 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
12/21 = 12 × 2/21 × 2 = 24/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
30/14 = 30 × 3/14 × 3 = 90/42 - Add the two like fractions:
24/42 + 90/42 = 24 + 90/42 = 114/42 - 114/42 simplified gives 19/7
- So, 12/21 + 30/14 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+30/14 12/21+60/14 12/42+30/14 12/21+30/28 36/21+30/14 12/21+90/14 12/63+30/14 12/21+30/42 60/21+30/14 12/21+30/70 84/21+30/14 12/21+30/98