Add 15/25 and 5/20
15/25 + 5/20 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
15/25 = 15 × 4/25 × 4 = 60/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
5/20 = 5 × 5/20 × 5 = 25/100 - Add the two like fractions:
60/100 + 25/100 = 60 + 25/100 = 85/100 - 85/100 simplified gives 17/20
- So, 15/25 + 5/20 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25+5/20 15/25+10/20 15/50+5/20 15/25+5/40 45/25+5/20 15/25+15/20 15/75+5/20 15/25+5/60 75/25+5/20 15/25+25/20 15/25+35/20