Add 9/21 and 4/25
9/21 + 4/25 is 103/175.
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,
9/21 = 9 × 25/21 × 25 = 225/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
4/25 = 4 × 21/25 × 21 = 84/525 - Add the two like fractions:
225/525 + 84/525 = 225 + 84/525 = 309/525 - 309/525 simplified gives 103/175
- So, 9/21 + 4/25 = 103/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+4/25 9/21+8/25 9/42+4/25 9/21+4/50 27/21+4/25 9/21+12/25 9/63+4/25 9/21+4/75 45/21+4/25 9/21+20/25 63/21+4/25 9/21+28/25