Add 9/18 and 15/30
9/18 + 15/30 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Add the two like fractions:
45/90 + 45/90 = 45 + 45/90 = 90/90 - 90/90 simplified gives 1/1
- So, 9/18 + 15/30 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36+15/30 9/18+15/60 27/18+15/30 9/18+45/30 9/54+15/30 9/18+15/90 45/18+15/30 9/18+75/30 9/90+15/30 63/18+15/30