Add 4/5 and 15/45
4/5 + 15/45 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
4/5 = 4 × 9/5 × 9 = 36/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
15/45 = 15 × 1/45 × 1 = 15/45 - Add the two like fractions:
36/45 + 15/45 = 36 + 15/45 = 51/45 - 51/45 simplified gives 17/15
- So, 4/5 + 15/45 = 17/15
In mixed form: 12/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+15/45 4/5+30/45 4/10+15/45 4/5+15/90 12/5+15/45 4/15+15/45 20/5+15/45 4/5+75/45 4/25+15/45 28/5+15/45 4/35+15/45