Add 35/21 and 10/15
1st number: 1 14/21, 2nd number: 10/15
35/21 + 10/15 is 7/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
35/21 = 35 × 5/21 × 5 = 175/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
10/15 = 10 × 7/15 × 7 = 70/105 - Add the two like fractions:
175/105 + 70/105 = 175 + 70/105 = 245/105 - 245/105 simplified gives 7/3
- So, 35/21 + 10/15 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+10/15 35/21+20/15 35/42+10/15 35/21+10/30 35/21+30/15 35/63+10/15 35/21+10/45 35/21+50/15 35/21+10/75 35/21+70/15