Add 2/21 and 15/75
2/21 + 15/75 is 31/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
2/21 = 2 × 25/21 × 25 = 50/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
15/75 = 15 × 7/75 × 7 = 105/525 - Add the two like fractions:
50/525 + 105/525 = 50 + 105/525 = 155/525 - 155/525 simplified gives 31/105
- So, 2/21 + 15/75 = 31/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+15/75 2/21+30/75 2/42+15/75 6/21+15/75 2/21+45/75 2/63+15/75 10/21+15/75 14/21+15/75