Add 15/9 and 90/15
1st number: 1 6/9, 2nd number: 6 0/15
15/9 + 90/15 is 23/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
15/9 = 15 × 5/9 × 5 = 75/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
90/15 = 90 × 3/15 × 3 = 270/45 - Add the two like fractions:
75/45 + 270/45 = 75 + 270/45 = 345/45 - 345/45 simplified gives 23/3
- So, 15/9 + 90/15 = 23/3
In mixed form: 72/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9+90/15 15/18+90/15 15/9+90/30 45/9+90/15 15/27+90/15 15/9+90/45 75/9+90/15 15/45+90/15 15/9+90/75 15/63+90/15