Add 36/5 and 21/9
1st number: 7 1/5, 2nd number: 2 3/9
36/5 + 21/9 is 143/15.
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,
36/5 = 36 × 9/5 × 9 = 324/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
21/9 = 21 × 5/9 × 5 = 105/45 - Add the two like fractions:
324/45 + 105/45 = 324 + 105/45 = 429/45 - 429/45 simplified gives 143/15
- So, 36/5 + 21/9 = 143/15
In mixed form: 98/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5+21/9 36/5+42/9 36/10+21/9 36/5+21/18 36/5+63/9 36/15+21/9 36/5+21/27 36/25+21/9 36/5+21/45 36/35+21/9 36/5+21/63