Add 21/12 and 10/16
1st number: 1 9/12, 2nd number: 10/16
21/12 + 10/16 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
21/12 = 21 × 4/12 × 4 = 84/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
10/16 = 10 × 3/16 × 3 = 30/48 - Add the two like fractions:
84/48 + 30/48 = 84 + 30/48 = 114/48 - 114/48 simplified gives 19/8
- So, 21/12 + 10/16 = 19/8
In mixed form: 23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+10/16 21/12+20/16 21/24+10/16 21/12+10/32 63/12+10/16 21/12+30/16 21/36+10/16 21/12+10/48 21/12+50/16 21/60+10/16 21/12+10/80 21/12+70/16 21/84+10/16