Add 21/45 and 35/15
1st number: 21/45, 2nd number: 2 5/15
21/45 + 35/15 is 14/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
35/15 = 35 × 3/15 × 3 = 105/45 - Add the two like fractions:
21/45 + 105/45 = 21 + 105/45 = 126/45 - 126/45 simplified gives 14/5
- So, 21/45 + 35/15 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+35/15 21/45+70/15 21/90+35/15 21/45+35/30 63/45+35/15 21/45+35/45 21/45+35/75