Add 18/5 and 28/8
1st number: 3 3/5, 2nd number: 3 4/8
18/5 + 28/8 is 71/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
18/5 = 18 × 8/5 × 8 = 144/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
28/8 = 28 × 5/8 × 5 = 140/40 - Add the two like fractions:
144/40 + 140/40 = 144 + 140/40 = 284/40 - 284/40 simplified gives 71/10
- So, 18/5 + 28/8 = 71/10
In mixed form: 71/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5+28/8 18/5+56/8 18/10+28/8 18/5+28/16 54/5+28/8 18/5+84/8 18/15+28/8 18/5+28/24 90/5+28/8 18/25+28/8 18/5+28/40 18/35+28/8 18/5+28/56