Add 18/28 and 2/5
18/28 + 2/5 is 73/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
2/5 = 2 × 28/5 × 28 = 56/140 - Add the two like fractions:
90/140 + 56/140 = 90 + 56/140 = 146/140 - 146/140 simplified gives 73/70
- So, 18/28 + 2/5 = 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: 36/28+2/5 18/28+4/5 18/56+2/5 18/28+2/10 54/28+2/5 18/28+6/5 18/84+2/5 18/28+2/15 90/28+2/5 18/28+10/5 18/28+2/25 18/28+14/5 18/28+2/35