Add 70/21 and 60/16
1st number: 3 7/21, 2nd number: 3 12/16
70/21 + 60/16 is 85/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
70/21 = 70 × 16/21 × 16 = 1120/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
60/16 = 60 × 21/16 × 21 = 1260/336 - Add the two like fractions:
1120/336 + 1260/336 = 1120 + 1260/336 = 2380/336 - 2380/336 simplified gives 85/12
- So, 70/21 + 60/16 = 85/12
In mixed form: 71/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+60/16 70/21+60/32 70/63+60/16 70/21+60/48 70/21+60/80