Add 21/12 and 1/10
1st number: 1 9/12, 2nd number: 1/10
21/12 + 1/10 is 37/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 10 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Likewise, for the 2nd fraction, since 10 × 6 = 60,
1/10 = 1 × 6/10 × 6 = 6/60 - Add the two like fractions:
105/60 + 6/60 = 105 + 6/60 = 111/60 - 111/60 simplified gives 37/20
- So, 21/12 + 1/10 = 37/20
In mixed form: 117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+1/10 21/12+2/10 21/24+1/10 21/12+1/20 63/12+1/10 21/12+3/10 21/36+1/10 21/12+1/30 21/12+5/10 21/60+1/10 21/12+1/50 21/12+7/10 21/84+1/10 21/12+1/70