Add 21/28 and 16/10
1st number: 21/28, 2nd number: 1 6/10
21/28 + 16/10 is 47/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
16/10 = 16 × 14/10 × 14 = 224/140 - Add the two like fractions:
105/140 + 224/140 = 105 + 224/140 = 329/140 - 329/140 simplified gives 47/20
- So, 21/28 + 16/10 = 47/20
In mixed form: 27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+16/10 21/28+32/10 21/56+16/10 21/28+16/20 63/28+16/10 21/28+48/10 21/84+16/10 21/28+16/30 21/28+80/10 21/28+16/50 21/28+16/70