Add 30/90 and 15/9
1st number: 30/90, 2nd number: 1 6/9
30/90 + 15/9 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
30/90 = 30 × 1/90 × 1 = 30/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
15/9 = 15 × 10/9 × 10 = 150/90 - Add the two like fractions:
30/90 + 150/90 = 30 + 150/90 = 180/90 - 180/90 simplified gives 2/1
- So, 30/90 + 15/9 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+15/9 30/90+30/9 30/90+15/18 30/90+45/9 30/90+15/27 30/90+75/9 30/90+15/45 30/90+15/63