Add 81/30 and 1/9
1st number: 2 21/30, 2nd number: 1/9
81/30 + 1/9 is 253/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
1/9 = 1 × 10/9 × 10 = 10/90 - Add the two like fractions:
243/90 + 10/90 = 243 + 10/90 = 253/90 - So, 81/30 + 1/9 = 253/90
In mixed form: 273/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+2/9 81/60+1/9 81/30+1/18 81/30+3/9 81/90+1/9 81/30+1/27 81/30+5/9 81/30+1/45 81/30+7/9 81/30+1/63