Add 30/18 and 10/12
1st number: 1 12/18, 2nd number: 10/12
30/18 + 10/12 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
30/18 = 30 × 2/18 × 2 = 60/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
10/12 = 10 × 3/12 × 3 = 30/36 - Add the two like fractions:
60/36 + 30/36 = 60 + 30/36 = 90/36 - 90/36 simplified gives 5/2
- So, 30/18 + 10/12 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+10/12 30/18+20/12 30/36+10/12 30/18+10/24 90/18+10/12 30/18+30/12 30/54+10/12 30/18+10/36 30/18+50/12 30/90+10/12 30/18+10/60 30/18+70/12 30/18+10/84