Add 42/12 and 28/30
1st number: 3 6/12, 2nd number: 28/30
42/12 + 28/30 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 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 30 × 2 = 60,
28/30 = 28 × 2/30 × 2 = 56/60 - Add the two like fractions:
210/60 + 56/60 = 210 + 56/60 = 266/60 - 266/60 simplified gives 133/30
- So, 42/12 + 28/30 = 133/30
In mixed form: 413/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+28/30 42/12+56/30 42/24+28/30 42/12+28/60 42/12+84/30 42/36+28/30 42/12+28/90 42/60+28/30 42/84+28/30