Add 42/20 and 3/12
1st number: 2 2/20, 2nd number: 3/12
42/20 + 3/12 is 47/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
3/12 = 3 × 5/12 × 5 = 15/60 - Add the two like fractions:
126/60 + 15/60 = 126 + 15/60 = 141/60 - 141/60 simplified gives 47/20
- So, 42/20 + 3/12 = 47/20
In mixed form: 27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+3/12 42/20+6/12 42/40+3/12 42/20+3/24 42/20+9/12 42/60+3/12 42/20+3/36 42/20+15/12 42/20+3/60 42/20+21/12 42/20+3/84