Add 72/9 and 18/90
1st number: 8 0/9, 2nd number: 18/90
72/9 + 18/90 is 41/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
72/9 = 72 × 10/9 × 10 = 720/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Add the two like fractions:
720/90 + 18/90 = 720 + 18/90 = 738/90 - 738/90 simplified gives 41/5
- So, 72/9 + 18/90 = 41/5
In mixed form: 81/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+36/90 72/18+18/90 72/9+54/90 72/27+18/90 72/45+18/90 72/63+18/90