Add 25/9 and 40/21
1st number: 2 7/9, 2nd number: 1 19/21
25/9 + 40/21 is 295/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
25/9 = 25 × 7/9 × 7 = 175/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
40/21 = 40 × 3/21 × 3 = 120/63 - Add the two like fractions:
175/63 + 120/63 = 175 + 120/63 = 295/63 - So, 25/9 + 40/21 = 295/63
In mixed form: 443/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/9+40/21 25/9+80/21 25/18+40/21 25/9+40/42 75/9+40/21 25/27+40/21 25/9+40/63 25/45+40/21 25/63+40/21