Add 18/9 and 98/80
1st number: 2 0/9, 2nd number: 1 18/80
18/9 + 98/80 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
18/9 = 18 × 80/9 × 80 = 1440/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
98/80 = 98 × 9/80 × 9 = 882/720 - Add the two like fractions:
1440/720 + 882/720 = 1440 + 882/720 = 2322/720 - 2322/720 simplified gives 129/40
- So, 18/9 + 98/80 = 129/40
In mixed form: 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+98/80 54/9+98/80 18/27+98/80 90/9+98/80 18/45+98/80 18/63+98/80