Add 98/18 and 15/20
1st number: 5 8/18, 2nd number: 15/20
98/18 + 15/20 is 223/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
98/18 = 98 × 10/18 × 10 = 980/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
15/20 = 15 × 9/20 × 9 = 135/180 - Add the two like fractions:
980/180 + 135/180 = 980 + 135/180 = 1115/180 - 1115/180 simplified gives 223/36
- So, 98/18 + 15/20 = 223/36
In mixed form: 67/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18+30/20 98/36+15/20 98/18+15/40 98/18+45/20 98/54+15/20 98/18+15/60 98/18+75/20 98/90+15/20