Add 15/21 and 1/25
15/21 + 1/25 is 132/175.
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,
15/21 = 15 × 25/21 × 25 = 375/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
1/25 = 1 × 21/25 × 21 = 21/525 - Add the two like fractions:
375/525 + 21/525 = 375 + 21/525 = 396/525 - 396/525 simplified gives 132/175
- So, 15/21 + 1/25 = 132/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+1/25 15/21+2/25 15/42+1/25 15/21+1/50 45/21+1/25 15/21+3/25 15/63+1/25 15/21+1/75 75/21+1/25 15/21+5/25 15/21+7/25