Add 98/18 and 20/15
1st number: 5 8/18, 2nd number: 1 5/15
98/18 + 20/15 is 61/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
98/18 = 98 × 5/18 × 5 = 490/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Add the two like fractions:
490/90 + 120/90 = 490 + 120/90 = 610/90 - 610/90 simplified gives 61/9
- So, 98/18 + 20/15 = 61/9
In mixed form: 67/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18+40/15 98/36+20/15 98/18+20/30 98/18+60/15 98/54+20/15 98/18+20/45 98/90+20/15 98/18+20/75