Add 80/18 and 72/9
1st number: 4 8/18, 2nd number: 8 0/9
80/18 + 72/9 is 112/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
80/18 = 80 × 1/18 × 1 = 80/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
72/9 = 72 × 2/9 × 2 = 144/18 - Add the two like fractions:
80/18 + 144/18 = 80 + 144/18 = 224/18 - 224/18 simplified gives 112/9
- So, 80/18 + 72/9 = 112/9
In mixed form: 124/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/36+72/9 80/18+72/18 80/54+72/9 80/18+72/27 80/90+72/9 80/18+72/45 80/18+72/63