Add 42/12 and 14/20
1st number: 3 6/12, 2nd number: 14/20
42/12 + 14/20 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
14/20 = 14 × 3/20 × 3 = 42/60 - Add the two like fractions:
210/60 + 42/60 = 210 + 42/60 = 252/60 - 252/60 simplified gives 21/5
- So, 42/12 + 14/20 = 21/5
In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+14/20 42/12+28/20 42/24+14/20 42/12+14/40 42/12+42/20 42/36+14/20 42/12+14/60 42/12+70/20 42/60+14/20 42/12+98/20 42/84+14/20