Add 80/15 and 98/90
1st number: 5 5/15, 2nd number: 1 8/90
80/15 + 98/90 is 289/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
80/15 = 80 × 6/15 × 6 = 480/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
98/90 = 98 × 1/90 × 1 = 98/90 - Add the two like fractions:
480/90 + 98/90 = 480 + 98/90 = 578/90 - 578/90 simplified gives 289/45
- So, 80/15 + 98/90 = 289/45
In mixed form: 619/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+98/90 80/45+98/90 80/75+98/90