Add 15/10 and 25/90
1st number: 1 5/10, 2nd number: 25/90
15/10 + 25/90 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
25/90 = 25 × 1/90 × 1 = 25/90 - Add the two like fractions:
135/90 + 25/90 = 135 + 25/90 = 160/90 - 160/90 simplified gives 16/9
- So, 15/10 + 25/90 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10+25/90 15/10+50/90 15/20+25/90 45/10+25/90 15/10+75/90 15/30+25/90 75/10+25/90 15/50+25/90 15/70+25/90