Add 25/18 and 15/45
1st number: 1 7/18, 2nd number: 15/45
25/18 + 15/45 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
25/18 = 25 × 5/18 × 5 = 125/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
15/45 = 15 × 2/45 × 2 = 30/90 - Add the two like fractions:
125/90 + 30/90 = 125 + 30/90 = 155/90 - 155/90 simplified gives 31/18
- So, 25/18 + 15/45 = 31/18
In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/18+15/45 25/18+30/45 25/36+15/45 25/18+15/90 75/18+15/45 25/54+15/45 25/18+75/45 25/90+15/45