Add 15/25 and 9/30
15/25 + 9/30 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 25 × 6 = 150,
15/25 = 15 × 6/25 × 6 = 90/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
9/30 = 9 × 5/30 × 5 = 45/150 - Add the two like fractions:
90/150 + 45/150 = 90 + 45/150 = 135/150 - 135/150 simplified gives 9/10
- So, 15/25 + 9/30 = 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25+9/30 15/25+18/30 15/50+9/30 15/25+9/60 45/25+9/30 15/25+27/30 15/75+9/30 15/25+9/90 75/25+9/30 15/25+45/30 15/25+63/30