Add 30/18 and 3/7
1st number: 1 12/18, 2nd number: 3/7
30/18 + 3/7 is 44/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
3/7 = 3 × 18/7 × 18 = 54/126 - Add the two like fractions:
210/126 + 54/126 = 210 + 54/126 = 264/126 - 264/126 simplified gives 44/21
- So, 30/18 + 3/7 = 44/21
In mixed form: 22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+3/7 30/18+6/7 30/36+3/7 30/18+3/14 90/18+3/7 30/18+9/7 30/54+3/7 30/18+3/21 30/18+15/7 30/90+3/7 30/18+3/35 30/18+21/7 30/18+3/49