Add 15/5 and 20/80
1st number: 3 0/5, 2nd number: 20/80
15/5 + 20/80 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
15/5 = 15 × 16/5 × 16 = 240/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Add the two like fractions:
240/80 + 20/80 = 240 + 20/80 = 260/80 - 260/80 simplified gives 13/4
- So, 15/5 + 20/80 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+20/80 15/5+40/80 15/10+20/80 45/5+20/80 15/5+60/80 75/5+20/80 15/25+20/80 15/35+20/80