Add 9/20 and 42/9
1st number: 9/20, 2nd number: 4 6/9
9/20 + 42/9 is 307/60.
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,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
42/9 = 42 × 20/9 × 20 = 840/180 - Add the two like fractions:
81/180 + 840/180 = 81 + 840/180 = 921/180 - 921/180 simplified gives 307/60
- So, 9/20 + 42/9 = 307/60
In mixed form: 57/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+42/9 9/20+84/9 9/40+42/9 9/20+42/18 27/20+42/9 9/60+42/9 9/20+42/27 45/20+42/9 9/20+42/45 63/20+42/9 9/20+42/63