Add 42/2 and 20/9
1st number: 21 0/2, 2nd number: 2 2/9
42/2 + 20/9 is 209/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
42/2 = 42 × 9/2 × 9 = 378/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
20/9 = 20 × 2/9 × 2 = 40/18 - Add the two like fractions:
378/18 + 40/18 = 378 + 40/18 = 418/18 - 418/18 simplified gives 209/9
- So, 42/2 + 20/9 = 209/9
In mixed form: 232/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+20/9 42/2+40/9 42/4+20/9 42/2+20/18 42/2+60/9 42/6+20/9 42/2+20/27 42/10+20/9 42/2+20/45 42/14+20/9 42/2+20/63