Add 25/21 and 30/25
1st number: 1 4/21, 2nd number: 1 5/25
25/21 + 30/25 is 251/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
25/21 = 25 × 25/21 × 25 = 625/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
30/25 = 30 × 21/25 × 21 = 630/525 - Add the two like fractions:
625/525 + 630/525 = 625 + 630/525 = 1255/525 - 1255/525 simplified gives 251/105
- So, 25/21 + 30/25 = 251/105
In mixed form: 241/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+30/25 25/21+60/25 25/42+30/25 25/21+30/50 75/21+30/25 25/21+90/25 25/63+30/25 25/21+30/75