Add 80/5 and 3/7
1st number: 16 0/5, 2nd number: 3/7
80/5 + 3/7 is 115/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
80/5 = 80 × 7/5 × 7 = 560/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
3/7 = 3 × 5/7 × 5 = 15/35 - Add the two like fractions:
560/35 + 15/35 = 560 + 15/35 = 575/35 - 575/35 simplified gives 115/7
- So, 80/5 + 3/7 = 115/7
In mixed form: 163/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+6/7 80/10+3/7 80/5+3/14 80/5+9/7 80/15+3/7 80/5+3/21 80/5+15/7 80/25+3/7 80/5+3/35 80/5+21/7 80/35+3/7 80/5+3/49