Add 42/20 and 3/9
1st number: 2 2/20, 2nd number: 3/9
42/20 + 3/9 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
3/9 = 3 × 20/9 × 20 = 60/180 - Add the two like fractions:
378/180 + 60/180 = 378 + 60/180 = 438/180 - 438/180 simplified gives 73/30
- So, 42/20 + 3/9 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+3/9 42/20+6/9 42/40+3/9 42/20+3/18 42/60+3/9 42/20+3/27 42/20+15/9 42/20+3/45 42/20+21/9 42/20+3/63