Add 3/5 and 7/8
3/5 + 7/8 is 59/40.
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,
3/5 = 3 × 8/5 × 8 = 24/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
7/8 = 7 × 5/8 × 5 = 35/40 - Add the two like fractions:
24/40 + 35/40 = 24 + 35/40 = 59/40 - So, 3/5 + 7/8 = 59/40
In mixed form: 119/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+7/8 3/5+14/8 3/10+7/8 3/5+7/16 9/5+7/8 3/5+21/8 3/15+7/8 3/5+7/24 15/5+7/8 3/5+35/8 3/25+7/8 3/5+7/40 21/5+7/8 3/5+49/8 3/35+7/8 3/5+7/56