Add 7/30 and 3/9
7/30 + 3/9 is 17/30.
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,
7/30 = 7 × 3/30 × 3 = 21/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
3/9 = 3 × 10/9 × 10 = 30/90 - Add the two like fractions:
21/90 + 30/90 = 21 + 30/90 = 51/90 - 51/90 simplified gives 17/30
- So, 7/30 + 3/9 = 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+3/9 7/30+6/9 7/60+3/9 7/30+3/18 21/30+3/9 7/90+3/9 7/30+3/27 35/30+3/9 7/30+15/9 7/30+3/45 49/30+3/9 7/30+21/9 7/30+3/63