Add 30/42 and 12/14
30/42 + 12/14 is 11/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
12/14 = 12 × 3/14 × 3 = 36/42 - Add the two like fractions:
30/42 + 36/42 = 30 + 36/42 = 66/42 - 66/42 simplified gives 11/7
- So, 30/42 + 12/14 = 11/7
In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+12/14 30/42+24/14 30/84+12/14 30/42+12/28 90/42+12/14 30/42+36/14 30/42+12/42 30/42+60/14 30/42+12/70 30/42+84/14 30/42+12/98