Add 70/12 and 21/36
1st number: 5 10/12, 2nd number: 21/36
70/12 + 21/36 is 77/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
70/12 = 70 × 3/12 × 3 = 210/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Add the two like fractions:
210/36 + 21/36 = 210 + 21/36 = 231/36 - 231/36 simplified gives 77/12
- So, 70/12 + 21/36 = 77/12
In mixed form: 65/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+42/36 70/24+21/36 70/12+21/72 70/12+63/36 70/36+21/36 70/60+21/36 70/84+21/36