Add 2/5 and 18/28
2/5 + 18/28 is 73/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
2/5 = 2 × 28/5 × 28 = 56/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Add the two like fractions:
56/140 + 90/140 = 56 + 90/140 = 146/140 - 146/140 simplified gives 73/70
- So, 2/5 + 18/28 = 73/70
In mixed form: 13/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/5+18/28 2/5+36/28 2/10+18/28 2/5+18/56 6/5+18/28 2/5+54/28 2/15+18/28 2/5+18/84 10/5+18/28 2/5+90/28 2/25+18/28 14/5+18/28 2/35+18/28