Add 5/21 and 32/15
1st number: 5/21, 2nd number: 2 2/15
5/21 + 32/15 is 83/35.
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,
5/21 = 5 × 5/21 × 5 = 25/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
32/15 = 32 × 7/15 × 7 = 224/105 - Add the two like fractions:
25/105 + 224/105 = 25 + 224/105 = 249/105 - 249/105 simplified gives 83/35
- So, 5/21 + 32/15 = 83/35
In mixed form: 213/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+32/15 5/21+64/15 5/42+32/15 5/21+32/30 15/21+32/15 5/21+96/15 5/63+32/15 5/21+32/45 25/21+32/15 5/21+32/75 35/21+32/15