Add 30/3 and 30/7
1st number: 10 0/3, 2nd number: 4 2/7
30/3 + 30/7 is 100/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
30/3 = 30 × 7/3 × 7 = 210/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
30/7 = 30 × 3/7 × 3 = 90/21 - Add the two like fractions:
210/21 + 90/21 = 210 + 90/21 = 300/21 - 300/21 simplified gives 100/7
- So, 30/3 + 30/7 = 100/7
In mixed form: 142/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/3+30/7 30/3+60/7 30/6+30/7 30/3+30/14 90/3+30/7 30/3+90/7 30/9+30/7 30/3+30/21 30/15+30/7 30/3+30/35 30/21+30/7 30/3+30/49