Add 5/16 and 70/21
1st number: 5/16, 2nd number: 3 7/21
5/16 + 70/21 is 175/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
5/16 = 5 × 21/16 × 21 = 105/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
70/21 = 70 × 16/21 × 16 = 1120/336 - Add the two like fractions:
105/336 + 1120/336 = 105 + 1120/336 = 1225/336 - 1225/336 simplified gives 175/48
- So, 5/16 + 70/21 = 175/48
In mixed form: 331/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/16+70/21 5/32+70/21 5/16+70/42 15/16+70/21 5/48+70/21 5/16+70/63 25/16+70/21 5/80+70/21 35/16+70/21