Add 30/21 and 27/25
1st number: 1 9/21, 2nd number: 1 2/25
30/21 + 27/25 is 439/175.
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,
30/21 = 30 × 25/21 × 25 = 750/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
27/25 = 27 × 21/25 × 21 = 567/525 - Add the two like fractions:
750/525 + 567/525 = 750 + 567/525 = 1317/525 - 1317/525 simplified gives 439/175
- So, 30/21 + 27/25 = 439/175
In mixed form: 289/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+27/25 30/21+54/25 30/42+27/25 30/21+27/50 90/21+27/25 30/21+81/25 30/63+27/25 30/21+27/75