Add 15/3 and 20/90
1st number: 5 0/3, 2nd number: 20/90
15/3 + 20/90 is 47/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
15/3 = 15 × 30/3 × 30 = 450/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Add the two like fractions:
450/90 + 20/90 = 450 + 20/90 = 470/90 - 470/90 simplified gives 47/9
- So, 15/3 + 20/90 = 47/9
In mixed form: 52/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/3+20/90 15/3+40/90 15/6+20/90 45/3+20/90 15/3+60/90 15/9+20/90 75/3+20/90 15/21+20/90