Add 16/12 and 21/72
1st number: 1 4/12, 2nd number: 21/72
16/12 + 21/72 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
16/12 = 16 × 6/12 × 6 = 96/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
96/72 + 21/72 = 96 + 21/72 = 117/72 - 117/72 simplified gives 13/8
- So, 16/12 + 21/72 = 13/8
In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/12+21/72 16/12+42/72 16/24+21/72 48/12+21/72 16/12+63/72 16/36+21/72 80/12+21/72 16/60+21/72 16/84+21/72