Add 20/28 and 3/10
20/28 + 3/10 is 71/70.
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,
20/28 = 20 × 5/28 × 5 = 100/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
3/10 = 3 × 14/10 × 14 = 42/140 - Add the two like fractions:
100/140 + 42/140 = 100 + 42/140 = 142/140 - 142/140 simplified gives 71/70
- So, 20/28 + 3/10 = 71/70
In mixed form: 11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+3/10 20/28+6/10 20/56+3/10 20/28+3/20 60/28+3/10 20/28+9/10 20/84+3/10 20/28+3/30 20/28+15/10 20/28+3/50 20/28+21/10 20/28+3/70