Add 25/21 and 8/9
1st number: 1 4/21, 2nd number: 8/9
25/21 + 8/9 is 131/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
25/21 = 25 × 3/21 × 3 = 75/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
8/9 = 8 × 7/9 × 7 = 56/63 - Add the two like fractions:
75/63 + 56/63 = 75 + 56/63 = 131/63 - So, 25/21 + 8/9 = 131/63
In mixed form: 25/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+8/9 25/21+16/9 25/42+8/9 25/21+8/18 75/21+8/9 25/21+24/9 25/63+8/9 25/21+8/27 25/21+40/9 25/21+8/45 25/21+56/9 25/21+8/63