Add 30/9 and 30/7
1st number: 3 3/9, 2nd number: 4 2/7
30/9 + 30/7 is 160/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
30/7 = 30 × 9/7 × 9 = 270/63 - Add the two like fractions:
210/63 + 270/63 = 210 + 270/63 = 480/63 - 480/63 simplified gives 160/21
- So, 30/9 + 30/7 = 160/21
In mixed form: 713/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9+30/7 30/9+60/7 30/18+30/7 30/9+30/14 90/9+30/7 30/9+90/7 30/27+30/7 30/9+30/21 30/45+30/7 30/9+30/35 30/63+30/7 30/9+30/49