Add 32/21 and 12/5
1st number: 1 11/21, 2nd number: 2 2/5
32/21 + 12/5 is 412/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
32/21 = 32 × 5/21 × 5 = 160/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
12/5 = 12 × 21/5 × 21 = 252/105 - Add the two like fractions:
160/105 + 252/105 = 160 + 252/105 = 412/105 - So, 32/21 + 12/5 = 412/105
In mixed form: 397/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/21+12/5 32/21+24/5 32/42+12/5 32/21+12/10 96/21+12/5 32/21+36/5 32/63+12/5 32/21+12/15 32/21+60/5 32/21+12/25 32/21+84/5 32/21+12/35