Add 15/90 and 20/10
1st number: 15/90, 2nd number: 2 0/10
15/90 + 20/10 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Add the two like fractions:
15/90 + 180/90 = 15 + 180/90 = 195/90 - 195/90 simplified gives 13/6
- So, 15/90 + 20/10 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+20/10 15/90+40/10 45/90+20/10 15/90+60/10 15/90+20/30 75/90+20/10 15/90+20/50 15/90+20/70