Add 18/5 and 20/28
1st number: 3 3/5, 2nd number: 20/28
18/5 + 20/28 is 151/35.
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,
18/5 = 18 × 28/5 × 28 = 504/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
20/28 = 20 × 5/28 × 5 = 100/140 - Add the two like fractions:
504/140 + 100/140 = 504 + 100/140 = 604/140 - 604/140 simplified gives 151/35
- So, 18/5 + 20/28 = 151/35
In mixed form: 411/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5+20/28 18/5+40/28 18/10+20/28 18/5+20/56 54/5+20/28 18/5+60/28 18/15+20/28 18/5+20/84 90/5+20/28 18/25+20/28 18/35+20/28