Add 8/20 and 3/28
8/20 + 3/28 is 71/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
3/28 = 3 × 5/28 × 5 = 15/140 - Add the two like fractions:
56/140 + 15/140 = 56 + 15/140 = 71/140 - So, 8/20 + 3/28 = 71/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+3/28 8/20+6/28 8/40+3/28 8/20+3/56 24/20+3/28 8/20+9/28 8/60+3/28 8/20+3/84 40/20+3/28 8/20+15/28 56/20+3/28 8/20+21/28