Add 15/25 and 25/18
1st number: 15/25, 2nd number: 1 7/18
15/25 + 25/18 is 179/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
15/25 = 15 × 18/25 × 18 = 270/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
25/18 = 25 × 25/18 × 25 = 625/450 - Add the two like fractions:
270/450 + 625/450 = 270 + 625/450 = 895/450 - 895/450 simplified gives 179/90
- So, 15/25 + 25/18 = 179/90
In mixed form: 189/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25+25/18 15/25+50/18 15/50+25/18 15/25+25/36 45/25+25/18 15/25+75/18 15/75+25/18 15/25+25/54 75/25+25/18 15/25+25/90