Add 3/5 and 12/9
1st number: 3/5, 2nd number: 1 3/9
3/5 + 12/9 is 29/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
3/5 = 3 × 9/5 × 9 = 27/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
12/9 = 12 × 5/9 × 5 = 60/45 - Add the two like fractions:
27/45 + 60/45 = 27 + 60/45 = 87/45 - 87/45 simplified gives 29/15
- So, 3/5 + 12/9 = 29/15
In mixed form: 114/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+12/9 3/5+24/9 3/10+12/9 3/5+12/18 9/5+12/9 3/5+36/9 3/15+12/9 3/5+12/27 15/5+12/9 3/5+60/9 3/25+12/9 3/5+12/45 21/5+12/9 3/5+84/9 3/35+12/9 3/5+12/63